On the basis of analyses over the collision theory, a motion mathematical model of the mixture on the vibration sieve is established with proper assumption.

从颗粒碰撞理论出发，在合理假设的前提下建立物料颗粒在筛面上的运动模型。

youdao

In this paper, the law of mass action is theoretically deduced from the collision theory of chemical reaction, and the instructions of it are explained in detail.

用化学反应的碰撞理论对质量作用定律进行了推导，并对质量作用定律的几点说明作了详细的解释。

youdao

To test their theory, the two researchers simulated such a collision on a computer.

为了验证他们的理论，两位研究人员在计算机上模拟了此次碰撞。

youdao

"A majority of scientists lean toward the theory that it was a collision from a large interplanetary body, " said Professor Valeri Shuvalov of the Russian Institute of Geosphere Dynamics.

CNN: Tunguska

One theory for the difference between the Moon's far side and near side is an ancient collision with a second natural satellite of Earth.

BBC: Nasa reveals new information about moon probes crash sites