When returning empty cylinders, close the valve before shipment. Leave some positive pressure in the cylinder.

返还空瓶时，在运输之前关闭阀门，使钢瓶内部保持正压 。

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Revolvers shall be presented with the cylinder swung out and empty. Self-loading pistols shall be presented with the magazine removed, the chamber empty, and the slide held or locked back.

转轮手枪须将转轮转出并清空，而自动手枪必须卸下弹匣、清空药室，并将滑套固定在后。

youdao

Revolvers shall be presented with the cylinder swung out and empty. Self-loading pistols shall be presented with the magazine removed, the chamber empty, and the slide held or locked back.

转轮手枪须将转轮转出并清空，而自动手枪必须卸下弹匣、清空药室，并将滑套固定在后。

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