The key position bolt of the engine include connecting rod, crankshaft, main bearing, cylinder head, flywheel and shock absorber bolt, all of which belong to bolt fastening.

发动机关键工位螺栓包括连杆螺栓、曲轴螺栓、主轴承盖螺栓、气缸盖螺栓、飞轮螺栓和减振器螺栓等均属螺纹联接。

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First: the position of the first bolt invariably leads to a greater Angle in the rope as the belayer stands away from the vertical plane.

第一：因为保护者站在离开岩壁的地方，第一把快挂总是导致通过它的绳子弯曲成很大的拐角。

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Die setters select dies for forging according to work order and specifications; position align and bolt dies to ram and anvil of power presses and hammers.

模具制定者根据工作秩序和规格选择模具进行锻造；将模具对准并拴紧在动力压力机和锤子的撞锤和铁砧。

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When the first bolt struck, he immediately moved to a position where he would be able to record another strike.

BBC: Lightning really does strike twice