| 释义 |
equilibrium
e·qui·lib·ri·um E0189900 (ē′kwə-lĭb′rē-əm, ĕk′wə-)n. pl. e·qui·lib·ri·ums or e·qui·lib·ri·a (-rē-ə) 1. A condition in which all acting influences are canceled by others, resulting in a stable, balanced, or unchanging system.2. Mental or emotional balance.3. Physics The state of a body or physical system at rest or in unaccelerated motion in which the resultant of all forces acting on it is zero and the sum of all torques about any axis is zero.4. Chemistry a. The state of a chemical reaction in which its forward and reverse reactions occur at equal rates so that the concentration of the reactants and products does not change with time.b. The state of a system in which more than one phase exists and exchange between phases occurs at equal rates so that there is no net change in the composition of the system.
[Latin aequilībrium : aequi-, equi- + lībra, balance.]equilibrium (ˌiːkwɪˈlɪbrɪəm) n, pl -riums or -ria (-rɪə) 1. a stable condition in which forces cancel one another2. a state or feeling of mental balance; composure3. (General Physics) any unchanging condition or state of a body, system, etc, resulting from the balance or cancelling out of the influences or processes to which it is subjected. See thermodynamic equilibrium4. (General Physics) physics a state of rest or uniform motion in which there is no resultant force on a body5. (Chemistry) chem the condition existing when a chemical reaction and its reverse reaction take place at equal rates6. (General Physics) physics the condition of a system that has its total energy distributed among its component parts in the statistically most probable manner7. (Physiology) physiol a state of bodily balance, maintained primarily by special receptors in the inner ear8. (Economics) the economic condition in which there is neither excess demand nor excess supply in a market[C17: from Latin aequilībrium, from aequi- equi- + lībra pound, balance]e•qui•lib•ri•um (ˌi kwəˈlɪb ri əm, ˌɛk wə-)
n., pl. -ri•ums, -ri•a (-ri ə) 1. a state of rest or balance due to the equal action of opposing forces. 2. equal balance between any powers, influences, etc.; equality of effect. 3. mental or emotional balance; equanimity. 4. a state or sense of steadiness and proper orientation of the body. 5. the condition existing when a chemical reaction and its reverse reaction proceed at equal rates. [1600–10; < Latin aequilībrium=aequi- equi- + lībr(a) balance] e•quil′i•bra•to`ry (ɪˈkwɪl ə brəˌtɔr i, -ˌtoʊr i) adj. e·qui·lib·ri·um (ē′kwə-lĭb′rē-əm)1. Physics The state of a body or physical system that is at rest or in constant and unchanging motion. The sum of all forces acting on a body that is in equilibrium is zero (because opposing forces balance each other). A system that is in equilibrium shows no tendency to alter over time.2. Chemistry The state of a reversible chemical reaction in which its forward and reverse reactions occur at equal rates so that the concentration of the reactants and products remains the same.equilibriumThe state of a reversible chemical reaction at which the forward and backward reactions take place at the same rateThesaurus| Noun | 1. | equilibrium - a stable situation in which forces cancel one anothersituation, state of affairs - the general state of things; the combination of circumstances at a given time; "the present international situation is dangerous"; "wondered how such a state of affairs had come about"; "eternal truths will be neither true nor eternal unless they have fresh meaning for every new social situation"- Franklin D.Rooseveltbalance - a state of equilibriumbalance of power - an equilibrium of power between nationsdynamic balance - (aeronautics) the state of equilibrium in which centrifugal forces due to a rotating mass (e.g., a propeller) do not produce force in the shaft and so vibration is reducedhomeostasis - (physiology) metabolic equilibrium actively maintained by several complex biological mechanisms that operate via the autonomic nervous system to offset disrupting changesisostasy - (geology) a general equilibrium of the forces tending to elevate or depress the earth's crustNash equilibrium - (game theory) a stable state of a system that involves several interacting participants in which no participant can gain by a change of strategy as long as all the other participants remain unchangedpoise - a state of being balanced in a stable equilibriumthermal equilibrium - a state in which all parts of a system are at the same temperaturedisequilibrium - loss of equilibrium attributable to an unstable situation in which some forces outweigh others | | 2. |  equilibrium - a chemical reaction and its reverse proceed at equal rateschemical equilibriumacid-base balance, acid-base equilibrium - (physiology) the normal equilibrium between acids and alkalis in the body; "with a normal acid-base balance in the body the blood is slightly alkaline"chemical reaction, reaction - (chemistry) a process in which one or more substances are changed into others; "there was a chemical reaction of the lime with the ground water" | | 3. |  equilibrium - equality of distribution equipoise, counterbalance, balancestructure, construction - a thing constructed; a complex entity constructed of many parts; "the structure consisted of a series of arches"; "she wore her hair in an amazing construction of whirls and ribbons"conformation - a symmetrical arrangement of the parts of a thingsymmetry, proportion - balance among the parts of something | | 4. |  equilibrium - a sensory system located in structures of the inner ear that registers the orientation of the headlabyrinthine sense, sense of balance, sense of equilibrium, vestibular senseproprioception - the ability to sense the position and location and orientation and movement of the body and its parts |
equilibriumnoun1. stability, balance, symmetry, steadiness, evenness, equipoise, counterpoise For the economy to be in equilibrium, income must equal expenditure.2. composure, calm, stability, poise, serenity, coolness, calmness, equanimity, steadiness, self-possession, collectedness I paused and took deep breaths to restore my equilibrium.equilibriumnounA stable state characterized by the cancellation of all forces by equal opposing forces:balance, counterpoise, equipoise, stasis.Translationsequilibrium (iːkwiˈlibriəm) noun a state of equal balance between weights, forces etc. 均衡 均衡equilibrium
equilibrium, state of balance. When a body or a system is in equilibrium, there is no net tendency to change. In mechanics, equilibrium has to do with the forces acting on a body. When no force is acting to make a body move in a line, the body is in translational equilibrium; when no force is acting to make the body turn, the body is in rotational equilibrium. A body in equilibrium at rest is said to be in static equilibrium. However, a state of equilibrium does not mean that no forces act on the body, but only that the forces are balanced. For example, when a leverlever,
simple machine consisting of a bar supported at some stationary point along its length and used to overcome resistance at a second point by application of force at a third point. The stationary point of a lever is known as its fulcrum.
..... Click the link for more information. is being used to hold up a raised object, forces are being exerted downward on each end of the lever and upward on its fulcrum, but the upward and downward forces balance to maintain translational equilibrium, and the clockwise and counterclockwise moments of the forces on either end balance to maintain rotational equilibrium. The stability of a body is a measure of its ability to return to a position of equilibrium after being disturbed. It depends on the shape of the body and the location of its center of gravity (see center of masscenter of mass,
the point at which all the mass of a body may be considered to be concentrated in analyzing its motion. The center of mass of a sphere of uniform density coincides with the center of the sphere.
..... Click the link for more information. ). A body with a large flat base and a low center of gravity will be very stable, returning quickly to its position of equilibrium after being tipped. However, a body with a small base and high center of gravity will tend to topple if tipped and is thus less stable than the first body. A body balanced precariously on a point is in unstable equilibrium. Some bodies, such as a ball or a cone lying on its side, do not return to their original position of equilibrium when pushed, assuming instead a new position of equilibrium; these are said to be in neutral equilibrium. In thermodynamicsthermodynamics,
branch of science concerned with the nature of heat and its conversion to mechanical, electric, and chemical energy. Historically, it grew out of efforts to construct more efficient heat engines—devices for extracting useful work from expanding hot gases.
..... Click the link for more information. , two bodies placed in contact with each other are said to be in thermal equilibrium when, after a sufficient length of time, their temperatures are equal. Chemical equilibriumchemical equilibrium,
state of balance in which two opposing reversible chemical reactions proceed at constant equal rates with no net change in the system. For example, when hydrogen gas, H2, and iodine gas, I2
..... Click the link for more information. refers to reversible chemical reactions in which the reactions involved are occurring in opposite directions at equal rates, so that no net change is observed.EquilibriumThe state of a body in which the forces acting on it are equally balanced.equilibrium see SOCIAL EQUILIBRIUM.Equilibrium in thermodynamics, such a slow transition of a thermodynamic system from one equilibrium state to another that all intermediate states may be regarded as equilibrium states. It is characterized by a very slow (infinitely slow at the limit) variation of the thermodynamic parameters of state. Any equilibrium process is a reversible process, and, conversely, any reversible process is an equilibrium process. equilibrium[‚ē·kwə′lib·rē·əm] (chemistry) chemical equilibrium (mechanics) Condition in which a particle, or all the constituent particles of a body, are at rest or in unaccelerated motion in an inertial reference frame. Also known as static equilibrium. (physics) Condition in which no change occurs in the state of a system as long as its surroundings are unaltered. (statistical mechanics) Condition in which the distribution function of a system is time-independent. equilibriumThe state of being equally balanced; a state of a body in which the forces acting on it are equally balanced.equilibrium1. any unchanging condition or state of a body, system, etc., resulting from the balance or cancelling out of the influences or processes to which it is subjected 2. Physics a state of rest or uniform motion in which there is no resultant force on a body 3. Chem the condition existing when a chemical reaction and its reverse reaction take place at equal rates 4. Physics the condition of a system that has its total energy distributed among its component parts in the statistically most probable manner 5. Physiol a state of bodily balance, maintained primarily by special receptors in the inner ear 6. the economic condition in which there is neither excess demand nor excess supply in a market equilibrium
equilibrium [e″kwĭ-lib´re-um] 1. harmonious adjustment of different elements or parts; called also balance.2. a state of chemical balance in the body, reached when the tissues contain the proper proportions of various salts and water. See also acid-base balance and fluid balance.3. sense of equilibrium.dynamic equilibrium the condition of balance between varying, shifting, and opposing forces that is characteristic of living processes.e·qui·lib·ri·um (ē'kwi-lib'rē-ŭm), 1. The condition of being evenly balanced; a state of repose between two or more antagonistic forces that exactly counteract each other.
See also: equilibrium constant. 2. In chemistry, a state of apparent repose created by two reactions proceeding in opposite directions at equal speed; in chemical equations, sometimes indicated by two opposing arrows (⇄) instead of the equal sign.
See also: equilibrium constant. Synonym(s): dynamic equilibrium [L. aequilibrium, a horizontal position, fr. aequus, equal, + libra, a balance] equilibrium Imaging
An MRI term for a state of balance between two opposing forces or divergent spheres of influence.equilibrium A state of constancy in a system; a population might be in static equilibrium–no pasa nada–ie, no births or deaths, or in dynamic equilibrium–ie, same numbers of births and deaths; the state to which a system evolves–eg, sustained periodic oscillations. See Chemical equilibrium, Linkage equilibrium, Sedimentation equilibrium Neurology A state of balance in the body, where forces are appropriately offset by counterforces. Cf Dizziness, Equilibrium, Vertigo Orthopedics A state of biomechanical homeostasis that enables persons to know where their bodies are in the environment and to maintain a desired position. See Fixed point equilibrium. e·qui·lib·ri·um (ē'kwi-lib'rē-ŭm) 1. The condition of being evenly balanced; a state of repose between two or more antagonistic forces that exactly counteract each other. 2. chemistry A state of apparent repose created by two reactions proceeding in opposite directions at equal speed; in chemical equations, sometimes indicated by two opposing arrows (↔) or (⇌).
Synonym(s): dynamic equilibrium. [L. aequilibrium, a horizontal position, fr. aequus, equal, + libra, a balance]e·qui·lib·ri·um (ē'kwi-lib'rē-ŭm) Condition of being evenly balanced; a state of repose between two or more antagonistic forces that exactly counteract each other. [L. aequilibrium, a horizontal position, fr. aequus, equal, + libra, a balance]Equilibrium
EquilibriumThe stable state of the system. See: Attractor.EquilibriumA state of stable prices brought about by the rough equality of supply and demand. This applies for consumer goods, securities, and most other goods and services.equilibrium a state of balance with no tendency to change. See EQUILIBRIUM MARKET PRICE, EQUILIBRIUM LEVEL OF NATIONAL INCOME, DISEQUILIBRIUM.AcronymsSeeequal toequilibrium
Related to equilibrium: Equilibrium of forcesSynonyms for equilibriumnoun stabilitySynonyms- stability
- balance
- symmetry
- steadiness
- evenness
- equipoise
- counterpoise
noun composureSynonyms- composure
- calm
- stability
- poise
- serenity
- coolness
- calmness
- equanimity
- steadiness
- self-possession
- collectedness
Synonyms for equilibriumnoun a stable state characterized by the cancellation of all forces by equal opposing forcesSynonyms- balance
- counterpoise
- equipoise
- stasis
Synonyms for equilibriumnoun a stable situation in which forces cancel one anotherRelated Words- situation
- state of affairs
- balance
- balance of power
- dynamic balance
- homeostasis
- isostasy
- Nash equilibrium
- poise
- thermal equilibrium
Antonymsnoun a chemical reaction and its reverse proceed at equal ratesSynonymsRelated Words- acid-base balance
- acid-base equilibrium
- chemical reaction
- reaction
noun equality of distributionSynonyms- equipoise
- counterbalance
- balance
Related Words- structure
- construction
- conformation
- symmetry
- proportion
noun a sensory system located in structures of the inner ear that registers the orientation of the headSynonyms- labyrinthine sense
- sense of balance
- sense of equilibrium
- vestibular sense
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