Safety bolt is set on the valve body, when the pressure in the cylinder is too high, safety diaphragm will burst automatically to ensure the safety accident cases, for the safety of the bottle.

瓶阀体上设安全螺栓，当气瓶内压力过高时，安全膜片将自动爆破泄压以确保意外情况下瓶的安全。

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Anchor/support bolt holes are located in base of body.

固定器/支架螺栓孔位于阀门的基座。

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A bolt hole is formed in the shaft body in such a manner as to substantially perpendicularly intersect the axis of the shaft body.

螺栓孔以与所述轴体的轴线基本上垂直相交的方式形成在所述轴体中。

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The swan underwent emergency surgery to remove part of the bolt which had snapped off inside its body.

BBC: Dorset swans are speared in "cowardly" crossbow attack

The RSPCA said part of a crossbow bolt lodged inside the male swan's body and missed its heart "by millimetres".

BBC: Dorset swans are speared in "cowardly" crossbow attack