A mechanical device for rotating the kelly.

旋转方钻杆的一种机械装置。

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A mechanical device that cleans the windshield.

擦挡风玻璃的机械装置。

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A mechanical device to position casing concentrically in the wellbore.

用于定位套管使其在井眼内居中的一种机械装置。

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He said the Earth is like a large mechanical device that will survive only if people living on it know how to operate it correctly.

VOA: special.2010.05.30

now I'm really fantastic at drawing this mechanical device, but you can imagine that dropping a weight can cause a paddle wheel to turn.

机械装置的时候,我真的很着迷，你可以想象,当重物掉落的时候会带动桨轮旋转。

麻省理工公开课 - 热力学与动力学课程节选

Woodland, a Manhattan Project scientist, came up with the idea for bar codes while running his fingers through the sand, trying to figure out how to put a unique code on every item of merchandise that could be easily scanned by a mechanical device.

FORBES: The Patent Troll You Don't Read About In Bar-Code Inventor's Obituaries

In terms of reliability impact, more and more work is done in the lab, typically on a dynamometer (a device which measures force), to prove the major mechanical systems on the car.

BBC: McLaren deny missing winter testing session is risky

An additional device, specifically a Dual-Mode DisplayPort cable adaptor, is required to convert the mechanical connector, as well as the electrical aspects of the signal, to output that is compatible with a DVI or HDMI cable and display.

ENGADGET: VESA outs latest DisplayPort Dual-Mode 1.1 standard with 4K HDMI support