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vector 音標拼音: [v'ɛktɚ] n. 向量,矢量,帶菌者
vt. 無線電導引 向量,向量,帶菌者無線電導引 vector向量 vector n 1: a variable quantity that can be resolved into components 2: a straight line segment whose length is magnitude and whose orientation in space is direction 3: any agent ( person or animal or microorganism) that carries and transmits a disease; " mosquitos are vectors of malaria and yellow fever"; " fleas are vectors of the plague"; " aphids are transmitters of plant diseases"; " when medical scientists talk about vectors they are usually talking about insects" [ synonym: { vector}, { transmitter}] 4: ( genetics) a virus or other agent that is used to deliver DNA to a cellVector \ Vec" tor\, n. [ L., a bearer, carrier. fr. vehere, vectum, to carry.] 1. Same as { Radius vector}. [ 1913 Webster] 2. ( Math.) A directed quantity, as a straight line, a force, or a velocity. Vectors are said to be equal when their directions are the same and their magnitudes equal. Cf. { Scalar}. [ 1913 Webster] Note: In a triangle, either side is the vector sum of the other two sides taken in proper order; the process finding the vector sum of two or more vectors is vector addition ( see under { Addition}). [ 1913 Webster] 66 Moby Thesaurus words for " vector": aerial infection, air line, airborne infection, axis, azimuth, beeline, biological vector, carrier, chord, communicability, compass bearing, compass direction, contagion, contagiousness, contamination, course, cryptogenic infection, diagonal, diameter, direct infection, direct line, directrix, droplet infection, dust infection, edge, epidemiology, great- circle course, hand infection, heading, indirect infection, infection, infectiousness, lee side, magnetic bearing, mechanical vector, normal, perpendicular, phytogenic infection, primary infection, pyogenic infection, radius, radius vector, relative bearing, right line, secant, secondary infection, segment, shortcut, side, straight, straight course, straight line, straight stretch, straightaway, streamline, subclinical infection, tack, taint, tangent, transversal, true bearing, vehicle, virus, waterborne infection, weather side, zoogenic infection |
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