Breechblock

（重定向自Breech block）

A breechblock (or breech block) is the part of the firearm action that closes the breech of a weapon (whether small arms or artillery) at the moment of firing.

单词	Breech block
释义	Breech block 英语百科 Breechblock （重定向自Breech block） A breechblock (or breech block) is the part of the firearm action that closes the breech of a weapon (whether small arms or artillery) at the moment of firing.
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