英文英文字典
英文英文字典
古腾堡计划中的在线英语-英语词典
结果
Vector的结果
Vector
(n.)
Same as Radius vector.
Vector
(n.)
A directed quantity, as a straight line, a force, or a
velocity. Vectors are said to be equal when their directions are the
same their magnitudes equal. Cf. Scalar.