常見例句雙語例句In so far as linear motion is concerned, a body is in equilibrium if the vector sum of the forces acting upon it is zero.就線性運動而論,如果作用于嚴(yán)格物體上的諸力的矢量之和是零,那么這個物體就處于平衡狀態(tài)。The change in the momentum of a system of particles during an impact is equal to the vector sum of all the external impulses acting on the system.碰撞時質(zhì)點系動量的改變等于作用在質(zhì)點系上所有外碰撞沖量的矢量和。jpkc.qust.edu.cnMoreover total virtual alternation force of the entities is the vector sum between all intersected cubes on two kinds of FV and EE basic contact modes.而其實體的總的虛擬交互力是在FV和EE兩種基本接觸模式下所分割的所有立方體間的矢量和。原聲例句It is clear that that vector is the sum of that vector and that vector, by the rules of vector addition, because that plus that is equal to the A.這個矢量是這個兩個矢量之和,根據(jù)矢量加法的法則,因為這兩個矢量相加就等于 A耶魯公開課 - 基礎(chǔ)物理課程節(jié)選 返回 vector sum