breech bolt

基本解釋

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英漢例句

雙語例句

• When looking ahead from the gun breech, if the Gatling gun rotates in clockwise direction, the left guide rail of the bolt carrier should be in higher position;
  從炮尾方向向前看，如果轉(zhuǎn)管炮是順時針旋轉(zhuǎn)，則左側(cè)導(dǎo)軌適宜布局得高一些；

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專業(yè)釋義

軍事學(xué)

• 槍閂