汉语翻译
n. 炮闩, 闩体, 尾栓
英语解释：
名词 breechblock:
- a metal block in breech-loading firearms that is withdrawn to insert a cartridge and replaced to close the breech before firing
同义词：breech closer
详细解释：
breech.block
n.（名词）The metal part that closes the breech end of the barrel of a breechloading gun and that is removed to insert a cartridge and replaced before firing.炮闩，枪闩：关闭后膛装弹枪的枪后部的后膛的金属部分，可以拆卸下来装 * 并在射击前被替换