采用了阴影技术和高速摄影相结合的方法，对激光推进流场演化过程进行了考察。

Shadow technology and a high-speed camera are combined to investigate the flow field evolvement.

youdao

高速铁路要求受电弓与接触线必须保持良好的接触和可靠的受流。

Pantograph and over-head contact line must maintain good contact and reliable by the current.

youdao

高速铁路要求受电弓与接触线必须保持良好的接触和可靠的受流。

Pantograph and over-head contact line must maintain good contact and reliable by the current.

youdao