例句與造句

1. The actual recoil is associated with the momentum of a gun, the momentum being the product of the mass of the gun times the reverse velocity of the gun including the time of the pointer finger time to click the trigger.
2. Only the time required to complete a collision will change, which can affect subsequent collisions . 40 % to 50 % of the kinetic energy of the initial ball ( from a single-ball strike ) is stored in the ball surfaces as potential energy for most of the collision process . 13 % of the initial velocity is imparted to the fourth ball ( which can be seen as a 3.3 degree movement if the fifth ball moves out 25 degrees ) and there is a slight reverse velocity in the first three balls, with the largest being  " 7 % of the initial velocity in the first ball ( it has a slight reverse movement after striking ).
3. It's difficult to find reversed velocity in a sentence. 用reversed velocity造句挺難的