向量的用法和樣例:
例句
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速度一種向量,其量值為物體的速率,其方向為物體運動(dòng)的方向
A vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion. -
可量化的值可以用數字形式描述出來(lái)的特性,例如球體的面積或者向量的長(cháng)度
A property that can be quantitatively described, such as the volume of a sphere or the length of a vector.