recoilv.退却；畏缩；弹回；报应n.畏缩；弹回；后坐力recoil effect反冲效应recoil spring复进簧recoiling mass后座质量recoilless pad反弹垫,反冲垫recoil species反冲粒种recoil booster后座增压器recoiling reel卷取机,重卷机recoil impulse反冲脉冲recoil tagging反冲标记recoil counter反冲粒子计数器