A crossplot of two components of particle motion over a time window.
质点在一个时窗内运动的两个分量的交会图。
Further, all the laws of nature that govern the particle motion are not known.
再者，支配粒子运动的一切自然规律也都是未知的。
Course Outline. Free Particle. Motion?
课程大纲。自由粒子。运动？
Black carbon, a short-lived particle, is in perpetual motion across the globe.
炭黑是一种“短命”颗粒，在全球范围内处于一种永恒运动状态。
The relative motion of a particle is an important part of kinematics.
“点的复合运动”是运动学的重要章节。
The relative motion of a particle is an important part of kinematics.
“点的复合运动”是运动学的重要章节。
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