基本解釋[軍事學]槍閂英漢例句雙語例句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，如果轉管炮是順時針旋轉，則左側導軌適宜布局得高一些；breech bolt更多例句專業(yè)釋義軍事學槍閂