The velocity vector is introduced into the model describing target motion, which depicts the target moving more precisely.

将速度矢量引入到目标运动模型，从而能更好地描述机动目标。

youdao

Using the harmonic oscillator model of quasicrystal of liquid, the wave equation describing the motion of liquid molecules has been derived.

用液体的准晶态的谐振子模型，导出描述液体分子运动的波动方程。

youdao

The mean geometric free path or the characteristic dimension of a container is the important physical magnitude in describing the heat motion of gas molecules under low pressure.

几何平均自由程或容器的特征尺度是低压下描述气体分子热运动的重要物理量。

youdao

And it turns out that the Schrodinger equation is an equation of motion in which you're describing a particle by describing it as a wave.

结果是薛定谔方程,用描述粒子波动性的方式,来描述这个粒子。

麻省理工公开课 - 化学原理课程节选

We're describing the motion of a particle in a circle.

我们描述了圆周上一个点的运动

耶鲁公开课 - 基础物理课程节选

Five backbenchers have signed a Commons motion, describing the act as "senseless destruction".

BBC: Emperor

He has tabled a Commons motion, branding the defeat as "pathetic" and describing many Premier League players as "grossly overpaid and under-performing".

BBC: World Cup 2010: England talent worries me - Wilkinson