The workers then add a glass cover, bolt on an aluminum frame, attach a junction box and package it for shipping.

工人们接下来用螺栓给一个铝框装上一个玻璃盖板，附上一个接线盒，然后包装发运。

youdao

Undo hexagon-head bolt on universal joint.

旋开万向节上的六角头螺栓。

youdao

The load coefficient method of bolt on tensile strength calculation was improved.

对螺栓拉伸强度计算的载荷系数法作了进一步改进。

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"There's a nut on the inside of the oil pan. The bolt came out. But the nut was not welded corectly to the oil pan,so the nut fell off.

VOA: standard.2010.08.01

On first impression, Bolt may seem to be a show-off.

VOA: standard.2009.08.21

He smiles at the television cameras, sticks out his tongue with antic poses and hand gestures, strikes his "lightning bolt" pose, and tells reporters that he is on his way "to being a legend."

VOA: standard.2009.08.21

Livemocha also allows Rosetta Stone to bolt on products in a lower price point.

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So here was the task: who would dive in there and open the bolt on the safety valve?

NPR: 'Voices of Chernobyl': Survivors' Stories

Tools to measure customer sentiment are starting to be embedded in solutions rather than offered as a bolt on capability.

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