后瞄准器是通过将站与站之间相对于前瞄准器的方向颠倒来指示的。

Back sights are indicated by reversing the from and to stations relative to the fore sight between the stations.

轰炸机编队中负责运用轰炸瞄准器和投弹击中目标的轰炸员。

The member of a bomber crew responsible for using the bombsight and releasing the bombs on the target.

在枪管下面的枪架前面部分被成形当作一个附件导轨去安装激光瞄准器或手电筒。

Front part of the frame under the barrel is shaped as an accessory rail to accept laser sights or flashlights.