| 释义 |
baseline
base·line or base line B5098500 (bās′līn′)n.1. a. A line serving as a basis, as for measurement, calculation, or location.b. Something, such as a set of data, used as a basis for comparison or as a control in a study: took x-rays as a baseline for observing later arthritis. c. A starting point: Interviews with students provided the baseline of our project.2. Baseball The base path.3. Sports a. The boundary line at either end of a court, as in basketball or tennis.b. The area near this boundary line: made a basket from the baseline.c. A style of play in tennis in which the player remains near the baseline and rarely approaches the net.baseline (ˈbeɪsˌlaɪn) or base linen1. (Surveying) surveying a measured line through a survey area from which triangulations are made2. an imaginary line, standard of value, etc, by which things are measured or compared3. (Tennis) a line at each end of a tennis court that marks the limit of playbase•line (ˈbeɪsˌlaɪn)
n. Also, base′ line`. 1. the area on a baseball diamond within which a runner must keep when running from one base to another. 2. the line at each end of a tennis court, parallel to the net, that marks the in-bounds limit of play. 3. a basic standard or level; guideline: a baseline for future studies. 4. a specific value serving as a comparison. 5. See triangulation (def. 1). [1740–50] baseline1. In topography, a surveyed line established with more than usual care, to which surveys are referred for coordination and correlation.
2. In photogrammetry, the line between the principal points of two consecutive air photographs. It is usually measured on one photograph after the principal point of the other has been transferred.
3. In radio navigation, the shorter arc of the great circle joining two radio transmitting stations of a navigation system.
4. In triangulation, the side of one of a series of coordinated triangles the length of which is measured with prescribed accuracy and precision and from which lengths of the other triangle sides are obtained by computation.Thesaurus| Noun | 1. | baseline - an imaginary line or standard by which things are measured or compared; "the established a baseline for the budget"criterion, standard, touchstone, measure - a basis for comparison; a reference point against which other things can be evaluated; "the schools comply with federal standards"; "they set the measure for all subsequent work" | | 2. |  baseline - the back line bounding each end of a tennis or handball court; when serving the server must not step over this lineservice lineline - in games or sports; a mark indicating positions or bounds of the playing area | | 3. |  baseline - the lines a baseball player must follow while running the basesline - in games or sports; a mark indicating positions or bounds of the playing area |
Translationsbaseline
baseline a line at each end of a tennis court that marks the limit of play baseline The straight line between two observational points, as between the elements of an interferometer (see radio telescope). The longer the baseline between two radio telescopes, the finer the detail that can be resolved in a radio source. See also LBI; VLBI.BaselineA standard measure or perceived common level of performance at a given point in time, against which design objectives and/or performance targets may be set against to achieve improved design outcomes or performance standards.baseline i. The shorter arc of the great circle joining the master and slave station of a pair of radio-transmitting stations.
ii. A yardstick for comparing an existing and a new system or aircraft. In this case, the former serves as a baseline.baselineThe horizontal line to which the bottoms of lowercase characters (without descenders) are aligned. See typeface.baseline
baseline [bās´līn] an observation or value that represents the normal or beginning level of a measurable quality, used for comparison with values representing response to experimental intervention or an environmental stimulus, usually implying that the baseline and reponse values refer to the same individual or system.baseline Clinical trials
The health state—disease severity, confounding conditions, etc.—present in a person or group of individuals at the beginning of a prospective study.
The baseline is time “zero”, before the participants in the study receive an experimental agent or intervention, or negative control; drug safety and efficacy may be determined by monitoring changes in baseline values; variations in distributions of baseline values between groups may introduce bias in the results.
Informatics
A measure of cumulative citation frequency across all Derwent Section classes, which shows upward and downward trends in a particular patent family.
Sleep disorders
The normative (i.e., typical) state of a person or of an investigative parameter before an experimental manipulation.
Vox populi
A generic term for any basal, null or unstimulated state, often represented as a horizontal line.base·line (bās'līn) 1. A line approximating the base of the skull, passing from the infraorbital ridge to the midline of the occiput, intersecting the superior margin of the external auditory meatus; the skull is in the anatomic position when the baseline lies in the horizontal plane.
Synonym(s): orbitomeatal line. 2. Level of performance or aggregate findings before initiation of therapy. BaselineA return to an original state.Mentioned in: Sedationbase·line (bās'līn) 1. A line approximating the base of the skull, passing from the infraorbital ridge to the midline of the occiput, intersecting the superior margin of the external auditory meatus. 2. Level of performance or aggregate findings before therapy.
Synonym(s): orbitomeatal line. LegalSeeBase Linebaseline
BaselineAnything used for comparison. For example, a company that wishes to determine whether its profits are increasing or decreasing may compare them to a previous year's profits. In this case, the previous year's profits are considered the base line. A baseline is also called a base. See also: Benchmark, Base currency.baselineEast-west lines in the public land survey system, part of the baseline and meridian line components. Each principal meridian has a baseline. Properties in the principal meridian's area are described by their bearing east or west of the meridian and north or south of the baseline. See B/L
See BLbaseline
Related to baseline: baseline dataSynonyms for baselinenoun an imaginary line or standard by which things are measured or comparedRelated Words- criterion
- standard
- touchstone
- measure
noun the back line bounding each end of a tennis or handball courtSynonymsRelated Wordsnoun the lines a baseball player must follow while running the basesRelated Words |