| 释义 |
SienUK
SIabbr. French Système International [d'Unités] (International System [of Units])
Si 1The symbol for silicon.
Si 2abbr. Bible Sirach
si C0000100 (sē)n. Music Ti.
[Italian, from Medieval Latin; see gamut.]si (siː) n (Classical Music) music a variant of te
si the internet domain name for (Computer Science) Slovenia
Si (ʃiː) or Si Kiangn (Placename) a variant transliteration of the Chinese name for the Xi
Si the chemical symbol for (Elements & Compounds) silicon
SI symbol for (Units) Système International (d'Unités). See SI unit abbreviation for (Placename) NZ South Island SI International System of Units. [< French S(ystème) I(nternationale d'Unités)] Si Chem. Symbol. silicon. S.I. Staten Island. SiThe symbol for silicon. Thesaurus| Noun | 1. Si - a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistorsatomic number 14, siliconchemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matterquartz - a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impuritiesclay - a very fine-grained soil that is plastic when moist but hard when firedsemiconducting material, semiconductor - a substance as germanium or silicon whose electrical conductivity is intermediate between that of a metal and an insulator; its conductivity increases with temperature and in the presence of impuritiesfeldspar, felspar - any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or bariumgranite - plutonic igneous rock having visibly crystalline texture; generally composed of feldspar and mica and quartzsand - a loose material consisting of grains of rock or coralsilicone, silicone polymer - any of a large class of siloxanes that are unusually stable over a wide range of temperatures; used in lubricants and adhesives and coatings and synthetic rubber and electrical insulation | | 2.SI - a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous intensity (candela); "Today the United States is the only country in the world not totally committed to the Systeme International d'Unites"International System, International System of Units, SI system, SI unit, Systeme International, Systeme International d'Unitesmetric system - a decimal system of weights and measures based on the meter and the kilogram and the second | | 3.si - the syllable naming the seventh (subtonic) note of any musical scale in solmizationte, tisolfa syllable - one of the names for notes of a musical scale in solmization |
SienUK
Si, river, China: see XiXi
or Xi Jiang
, great river of S China, c.1,250 mi (2,010 km) long, rising in E Yunnan prov. and flowing generally E through Guangxi and Guangdong provs. to the South China Sea near Guangzhou; the Kui, Bei, and Dong rivers are its chief tributaries.
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Si, symbol for the element siliconsilicon,
nonmetallic chemical element; symbol Si; at. no. 14; interval in which at. wt. ranges 28.084–28.086; m.p. 1,410°C;; b.p. 2,355°C;; sp. gr. 2.33 at 25°C;; valence usually +4.
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SI: see International System of UnitsInternational System of Units,
officially called the Système International d'Unités, or SI, system of units adopted by the 11th General Conference on Weights and Measures (1960). It is based on the metric system.
..... Click the link for more information. .Si (chemistry) silicon
SI (physics) International System of Units International System of Units (SI)A system of units based on the following fundamental quantities: metre, kilogram, second, ampere, kelvin, candela, and mole.
SIThe symbol for the International System of Units.Xi, Hsi, Si a river in S China, rising in Y?nnan province and flowing east to the Canton delta on the South China Sea: the main river system of S China. Length: about 1900 km (1200 miles) SI (unit)Syst?me International.SI (character)Shift In.si (networking)The country code for Slovenia.SI
silicon [sil´ĭ-kon] a chemical element, atomic number 14, atomic weight 28.086, symbol Si. (See Appendix 6.)silicon dioxide silica.
SI units the units of measurement generally accepted for all scientific and technical uses; together they make up the International System of Units. (See also metric system" >metric system.) The abbreviation SI, from the French Système International d'Unités, is used in all languages. There are seven base SI units, defined by specified physical measurements, and two supplementary units. Units are derived for any other physical quantities by multiplication and division of the base and supplementary units. The derived units with special names are shown in the accompanying table.
SI is a coherent system. This means that units are always combined without conversion factors. The derived unit of velocity is the meter per second (m/s); the derived unit of volume is the cubic meter (m3). If you know that pressure is force per unit area, then you know that the SI unit of pressure (the pascal) is the unit of force divided by the unit of area and is therefore equal to 1 newton per square meter.
The metric prefixes can be attached to any unit in order to make a unit of a more convenient size. The symbol for the prefix is attached to the symbol for the unit, e.g., nanometer (nm) = 10−9 m. The units of mass are specified in terms of the gram, e.g., microgram (μg) = 10−9 kg.
Only one prefix is used with a unit; the use of units such as the millimicrometer is no longer acceptable. When a unit is raised to a power, the power applies to the prefix as well, e.g., a cubic millimeter (mm3) = 10−9 m3. When a prefix is used with a ratio unit, it should be in the numerator rather than in the denominator, e.g., kilometers/second (km/s) rather than meters/millisecond (m/ms). Only prefixes denoting powers of 103 are normally used. Hecto-, deka-, deci-, and centi- are usually attached only to the metric system units gram, meter, and liter.
Owing to the force of tradition, one noncoherent unit, the liter, equal to 10−3 m3, or 1 dm3, is generally accepted for use with SI. The internationally accepted abbreviation for liter is the letter l; however, this can be confused with the numeral 1, especially in typescript. For this reason, the capital letter L is also used as a symbol for liter. The lower case letter is generally used with prefixes, e.g., dl, ml, fl. The symbols for all other SI units begin with a capital letter if the unit is named after a person and with a lower case letter otherwise. The name of a unit is never capitalized.SIAbbreviation for International System of Units (Système International d'Unités).
SiSymbol for silicon.
sIAbbreviation for 6-mercaptopurine ribonucleoside (or 6-thioinosine).SI Abbreviation for:
International System of Units
sacroiliac
safety index
sagittal index
saline infusion
satiety index
saturation index
secondary infertility
seed implantation
selectivity index
self-inflicted
self-injury
sensitivity index
serious illness
serious injury
seriously ill
sexual intercourse
sexually inactive
sexually inexperienced
serum iron
severity index
shock index
signal intensity
silent infarction
silent ischaemia
silicone
silver
Singh Index
sinus irregularities
situs inversus
small intestine
smoke inhalation
smoking index
snoring index
social interaction
Special Investigator
speech impaired
spinal injury
stability index
stratum intermedium
statutory instrument
stress incontinence
stroke index
Structured Interview
suicidal ideation
superior/inferior
survival index
systolic indexSI Lab medicine Systeme International d'unites, Intl System of units The international system for standardization of units of measurement; the SI is a refinement and extension of the metric system 1. Sacroiliac.2. Saline injection
.3. Saturation index.4. School inventory–psychological test.5. Sex inventory–psychological evaluation.SI Abbreviation for International System of Units; sensory integration.
Si Symbol for silicon. SI Abbreviation for International System of Units.
Si Symbol for silicon. SI
SI abbreviation for STATUTORY INSTRUMENT.SienUK
SIThe two-character ISO 3166 country code for SLOVENIA.Si1. ISO 3166-1 alpha-2 code for the Republic of Slovenia. This is the code used in international transactions to and from Slovenian bank accounts.
2. ISO 3166-2 geocode for Slovenia. This is used as an international standard for shipping to Slovenia. Each municipality has its own code with the prefix "SI." For example, the code for the Municipality of Bled is ISO 3166-2:SI-003.SI
| Acronym | Definition |
|---|
| SI➣Sports Illustrated | | SI➣Slovenia (international code) | | SI➣Silicon | | SI➣Systems Integration | | SI➣Système International d'Unités (international system of units based on the Meter, Kilogram, Second, Ampere, Kelvin, Candela, and Mole) | | SI➣System Information | | SI➣System Information (Norton Utilities) | | SI➣Statutory Instrument (UK Legislation term) | | SI➣Service Information | | SI➣School of Information (university) | | SI➣Self-Injury | | SI➣Square Inch(es) | | SI➣Smithsonian Institution | | SI➣Supplemental Instruction | | SI➣Signal Integrity | | SI➣Spark Ignition | | SI➣Shift In | | SI➣Slightly Included (second lowest quality of diamond) | | SI➣Serious Injury | | SI➣International System of Units (metric system; more commonly seen as ISU) | | SI➣South Island (New Zealand) | | SI➣Staten Island | | SI➣Sistema Informativo | | SI➣Structural Integrity | | SI➣Systèmes d'Information | | SI➣Standardization (Flight) Instructor | | SI➣System International | | SI➣Site Investigation | | SI➣System Integrator | | SI➣Superimpose | | SI➣Sensory Integration | | SI➣Sexual Intercourse | | SI➣System Interface | | SI➣Sports Interactive (game) | | SI➣Still Image | | SI➣Shut-In | | SI➣Small Intestine | | SI➣Seriously Ill | | SI➣Self Inflicted | | SI➣Scientific Investigation | | SI➣Sistema de Informação | | SI➣Systems Integrator | | SI➣Sacroiliac | | SI➣Singapore Idol (Singapore TV show) | | SI➣Study Island (software) | | SI➣Strategic Initiative (management) | | SI➣Self-Insert (fiction) | | SI➣Software Item | | SI➣Simply Irresistible (song) | | SI➣Speaker Independent | | SI➣Self-Incompatibility (botany) | | SI➣Science and Industry | | SI➣Sacroiliac Joint | | SI➣Shadow Image | | SI➣Siena, Toscana (Italian province) | | SI➣Swine Influenza | | SI➣Site Inspection | | SI➣Systems Intelligence (psychological theory) | | SI➣Swap-In | | SI➣Soroptimist International | | SI➣Sub Inspector | | SI➣Simple Interest | | SI➣Synergos Institute (San Diego, CA) | | SI➣Softice (debugger) | | SI➣Service Index | | SI➣Swarm Intelligence | | SI➣Sudden Impact (movie) | | SI➣Source Index | | SI➣Suicidal Ideation | | SI➣Scientific Instrument | | SI➣Sensitive Item (algorithm) | | SI➣Step-Index | | SI➣Service Indicator (SS7 SCCP) | | SI➣Situationist International (governing body of political dissidents circa 1968) | | SI➣Specialty Item | | SI➣SPARC International, Inc. | | SI➣Service Integrator | | SI➣Semiconductor International | | SI➣Shared Interest (New York, NY) | | SI➣Side Information | | SI➣Special Instruction | | SI➣Schweizer Informatiker Gesellschaft (Zurich, Switzerland) | | SI➣Shrouded Isles (gaming, Dark Age of Camelot add-on) | | SI➣Silicon Image, Inc | | SI➣Specific Impulse (measure of efficiency of rocket engines) | | SI➣Surface Impoundment | | SI➣Special Intelligence | | SI➣Special Inspection | | SI➣Simplified Issue (life insurance) | | SI➣Saturation Index | | SI➣Signal Interference | | SI➣Science Instrument (Hubble Telescope) | | SI➣Soil Investigation | | SI➣Similarity Index | | SI➣Strategic Investor | | SI➣Speech Impairment | | SI➣Shift-Invariant | | SI➣Salt Institute | | SI➣Solution Implementation | | SI➣Summons Issued | | SI➣Sarcasm Intended | | SI➣Systematic Innovation | | SI➣Sailing Instruction | | SI➣Security Inspector | | SI➣Solving International | | SI➣Strange Interlude (Eugene O'Neill book) | | SI➣Sensitivity Information | | SI➣Self-Insertion (fan fiction) | | SI➣Shipping Instruction | | SI➣Siilinjärvi (Finnish) | | SI➣Sexually Inappropriate | | SI➣Secondary Injection | | SI➣Solar Influences | | SI➣Scalable Infrastructure | | SI➣Skill Identifier (US Army) | | SI➣Sucrase-Isomaltase Deficiency | | SI➣Settlement Instruction | | SI➣Surveillance and Intelligence | | SI➣Self Isolation | | SI➣Safeguards Information | | SI➣Safe Intake | | SI➣Standardization and Interoperability | | SI➣Spiritual Intervention (religious doctrine) | | SI➣Surveillance Index | | SI➣Straight-In Approach | | SI➣Spray Injection | | SI➣Sergeant Instructor | | SI➣Saint Ignatius College Preparatory (San Francisco, California) | | SI➣Smoothness Index | | SI➣Society for India (Cornell University) | | SI➣Summary Investigation | | SI➣Scintillation Index | | SI➣Supporting Installation | | SI➣Samahang Ilokano (Filipino college organization) | | SI➣Solar Inertial | | SI➣Supplementary Insulation | | SI➣Sponsor Identification | | SI➣Surveyor Intern | | SI➣Sport Injected (Honda) | | SI➣Simple Interference | | SI➣Sector Iridectomy (partial removal of the iris of the eye) | | SI➣Septuagint Institute (Trinity Western University, Canada) | | SI➣Selective Interchange | | SI➣Safety/Site Inspection | | SI➣Semiconductor Ignition | | SI➣Shadow Instruction (computer instruction set) | | SI➣Sharma Industries | | SI➣Somatosensory Receiving Area (in parietal lobe of cortex) | | SI➣Spokane International Railroad Company | | SI➣Signaling Intelligence | | SI➣Sippy International | | SI➣Normalized Subthreshold Swing | | SI➣Slave Illuminator | | SI➣Systems Industries, Incorporated | | SI➣Societatis Iesu, Latin for Society of Jesus, Jesuits (religious order) | | SI➣Secretaría Indigenista (Spanish: Indigenous Secertariat) |
SienUK
Synonyms for Sinoun a tetravalent nonmetallic elementSynonymsRelated Words- chemical element
- element
- quartz
- clay
- semiconducting material
- semiconductor
- feldspar
- felspar
- granite
- sand
- silicone
- silicone polymer
noun a complete metric system of units of measurement for scientistsSynonyms- International System
- International System of Units
- SI system
- SI unit
- Systeme International
- Systeme International d'Unites
Related Wordsnoun the syllable naming the seventh (subtonic) note of any musical scale in solmizationSynonymsRelated Words |