The diffusion of a particle or molecule with respect to a stationary frame of reference was discussed in the preceding chapter . 一个粒子或者分子相对于稳定参考系统的扩散已在前一章中作过讨论。
In a specific event light exhibits either a wave or a particle nature, never both simultaneously . 在一个特定事件中，光或者表现出波的本质，或者表现出粒子的本质，但是这两种本质从不同时表现出来。
The explanation could lie in the sharp temperature jump a particle experiences when it becomes dispersed in a bubble of reactant gas . 其解释是当颗粒被分散于反应气体的气泡中时，经受着温度的突然跃升。
The importance of diffusion processes can be gauged by comparing the distances which a particle travels under the influence of gravity and diffusion . 扩散过程的重要性可以通过比较粒子在扩散和重力影响下经过的距离来衡量。
The substance of a particle . the ultimate substance 一个粒子的实质那终极的物质
The substance of a particle . the ultimate substance . . 一个粒子的实质那终极的物质. .
Screen simulation using a particle discrete element method 用颗粒离散元法模拟筛分过程
The substance of a particle . the ultimate substance . . 一个粒子的实质那终极的物质. .
Q . how will i know if i found a particle 问：怎样才能知道我发现了一个？
There wasn ' t a particle of truth in what he said 他说的没有一点真话。
