The front of the beam expansion system is also provided with a dust proof mirror.

在其扩束系统前面还设有一个防尘镜。

youdao

An effective decentralized overlapping feedback control technique is presented after the feedback control for the expansion system of the original system is compressed.

通过对原系统的扩充系统设计反馈控制律以及对其进行压缩，得到了一种有效的分散交迭反馈控制方案。

youdao

Here there's an expansion going on, so the system is doing work to the external world.

这里发生了膨胀,所以系统对外界做功，活塞被推出来。

麻省理工公开课 - 热力学与动力学课程节选

We know in an adiabatic expansion the system's going to cool.

我们知道在绝热膨胀过程中,系统温度会降低。

麻省理工公开课 - 热力学与动力学课程节选

People never thought of insurance as the same as a bank, but since this is relatively recently-- that was only nine years ago--at this time, it means that we are now seeing an expansion of our banking system in the U.S.

人们从来不认为保险和银行是一回事,但是从那法案之后它们就是差不多的了,这只不过是九年前的法案,但是现在,这意味着在美国,银行系统得到了扩张

耶鲁公开课 - 金融市场课程节选

The latter would require congressional approval, as would any expansion of the system.

WSJ: Systemic Gaps Hinder Background Checks for Gun Purchases

And several companies had concept and prototype devices that envisioned digital cameras and global positioning system expansion devices that would fit into the SD card slot.

FORBES: Ten O'Clock Tech: Stamp-Sized Storage

But the expansion of the system of suspicious activity reports (SARs) is swamping the National Criminal Intelligence Service, the authority responsible for processing and analysing them and then passing them on to prosecutors and police.

BBC: Analysis