calculation impact velocity
critical impact velocity
hypo-critical velocity impact
IMPACT VELOCITY
碰撞速度
冲击速度
撞击速度
冲击速率
入射速度
冲蚀颗粒速度
弹着速度
着速
low-velocity impact characteristic
medium-low velocity impact
repeated low velocity impact
threshold of impact velocity
impact environmental impact
average velocity， mean velocity
group velocity and phase velocity
ratio of pulp velocity and sire velocity
velocity derived from velocity spectrum