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单词 vector
释义

WordReference Random House Learner's Dictionary of American English © 2024
vec•tor /ˈvɛktɚ/USA pronunciation   n. [countable]
  1. Mathematics
    • a quantity that has both magnitude and direction, as force or velocity.
  2. the direction or course followed by something, as by an airplane.
  3. Immunologysomething or someone, as a person or an insect, that carries and transmits a disease-causing organism.

v. [+ object]
    • Aeronauticsto guide (an aircraft) in flight by radioing necessary or proper directions.
See -vec-.
WordReference Random House Unabridged Dictionary of American English © 2024
vec•tor  (vektər),USA pronunciation n. 
  1. Mathematics
    • a quantity possessing both magnitude and direction, represented by an arrow the direction of which indicates the direction of the quantity and the length of which is proportional to the magnitude. Cf. scalar (def. 4).
    • Mathematicssuch a quantity with the additional requirement that such quantities obey the parallelogram law of addition.
    • Mathematicssuch a quantity with the additional requirement that such quantities are to transform in a particular way under changes of the coordinate system.
    • Mathematicsany generalization of the above quantities.
  2. the direction or course followed by an airplane, missile, or the like.
  3. Ecology[Biol.]
    • an insect or other organism that transmits a pathogenic fungus, virus, bacterium, etc.
    • any agent that acts as a carrier or transporter, as a virus or plasmid that conveys a genetically engineered DNA segment into a host cell.
  4. Computingan array of data ordered such that individual items can be located with a single index or subscript.

v.t. 
  1. Aeronauticsto guide (an aircraft) in flight by issuing appropriate headings.
  2. [Aerospace.]to change direction of (the thrust of a jet or rocket engine) in order to steer the craft.
  • Latin: one that conveys, equivalent. to vec-, variant stem of vehere to carry + -tor -tor
  • 1695–1705;
vec•to•ri•al  (vek tôrē əl, -tōr-),USA pronunciation adj.  vec•tori•al•ly, adv. 

Collins Concise English Dictionary © HarperCollins Publishers::
vector /ˈvɛktə/ n

  1. Also called: polar vector a variable quantity, such as force, that has magnitude and direction and can be resolved into components that are odd functions of the coordinates. It is represented in print by a bold italic symbol: F or ̄F
  2. an element of a vector space

  3. Also called: carrier an organism, esp an insect, that carries a disease-producing microorganism from one host to another, either within or on the surface of its body
  4. Also called: cloning vector an agent, such as a bacteriophage or a plasmid, by means of which a fragment of foreign DNA is inserted into a host cell to produce a gene clone in genetic engineering
  5. the course or compass direction of an aircraft
vb (transitive)
  1. to direct or guide (a pilot, aircraft, etc) by directions transmitted by radio
  2. to alter the direction of (the thrust of a jet engine) as a means of steering an aircraft
Etymology: 18th Century: from Latin: carrier, from vehere to convey

vectorial /vɛkˈtɔːrɪəl/ adj
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