动词 recoil:

1. draw back, as with fear or pain

2. come back to the originator of an action with an undesired effect

3. spring back; spring away from an impact

4. spring back, as from a forceful thrust

recoilv.退却；畏缩；弹回；报应n.畏缩；弹回；后坐力recoil vector反冲矢量recoil buffer火包缓冲器, 枪身缓冲装置recoil factor反冲因数recoil piston驻退活塞recoil energy反冲能recoil nuclei反冲核recoil method反冲击recoil proton反冲质子recoil length反冲长度recoil-atomn.反冲原子

1. Some of the energy intended for the photon is drained off by the recoiling atom.
   原来给予光子的能量有一部分为反冲原子所消耗。
2. For example, background particles tend to produce more ionization than a nucleus recoiling from a neutralino collision.
   例如，背景粒子和一个与中性伴子碰撞而反冲的原子核相比，前者将造成更多的游离。