He'd pulled into the first shop off I-84 and was told that a loose head bolt was to blame.

他硬撑着从84号公路下来，开到了第一家修车铺。人家告诉他，是一个没拧紧的缸盖螺栓造成的问题。

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Generally, the cylinder and the cylinder head bolt together with a thin gasket pressed between them to ensure a good seal.

一般来说，气缸和气缸盖用螺栓紧固在一起，气缸与气缸盖之间用一薄垫圈确保密封良好。

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Top view of square head bolt.

方头螺钉的俯视图。

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One of three women who were killed in Bradford died from severe head injuries caused by the bolt from a crossbow, an inquest has heard.

BBC: Bradford woman 'killed by crossbow bolt and knife'

The Sami are preparing corrals into which they will herd the reindeer, then slaughter them with a captive bolt gun shot to the head.

BBC: South Georgia prepares to cull its invasive reindeer