No mechanical devices are used in passive heating systems.

被动的加热系统中没有用到机械装置。

youdao

Some are even making mechanical devices.

有些人甚至在制造机械设备。

youdao

Like many boys of today he made mechanical devices and models.

他和现在的许多孩子们一样，制作机械装置和模型。

youdao

These mechanical devices that show the relative placement and movement of the planets and moons are sometimes called orreries.

VOA: special.2010.09.29

If unfamiliar, these are the mechanical computer devices that you have to use to buy a ticket on the T these days and there was one of these really awkward but touching situations where it was clear that this woman had no idea, you know, what to do, how to get from here to here, and I could see her just staring at the turnstiles that you're supposed to go through to get into the subway.

如果不熟悉，这是机械计算机设备,当今你必须使用它们来买地铁票,它们实在是难操作的,这个令人同情的情况是,明显这位老太太不知道怎样操作，怎样从这一步到那一步,我看见她只是凝视着,地铁的栅门口。

哈佛公开课 - 计算机科学课程节选

Comparison of underwater odors is the idea behind some mechanical searching devices now in use by the military.

VOA: special.2010.08.03

To be fair, these are complicated mechanical devices, forced to process physical objects, not just data.

FORBES: Why Do Printers Still Suck?

So why are we so much better at improvising than robots -- which are essentially mechanical devices controlled by computers?

CNN: Roboticist sees improvisation through machine's eyes

The earth is full of inorganic raw materials to create mechanical devices and their energy source, historically fossil fuels, was in abundance.

FORBES: Lemin Wu, Economic Growth and Why Humanity Can't Have Nice Things