He attached one of his electromagnets to a wheel, and fixed another to a stationary frame.

之一，他重视他的电磁铁，以一个车轮，并固定另一固定框架。

youdao

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。

youdao

For this reason, the samara has no stationary frame of reference, unlike a two-winged helicopter, and appears to fall in a complex way.

因此，翅果没有稳定的参考结构，不像双翼直升机，并且它在降落中呈现出复杂的方式。

youdao

With continuous AF shooting as we moved towards a stationary target, it took ten seconds to get nine shots, or less than one frame per second.

ENGADGET: Canon PowerShot G1 X review