1、The part of a gun carriage that rests or slides on the ground.
底板靠在地面或沿地面滑動的大炮輪架部分

2、a gun carriage elevated so that the gun can be fired over the parapet.
一種很高的槍架，人們可以憑借它來在胸墻上方射擊。

3、The pin on which a gun carriage revolves.
炮架樞軸炮架轉(zhuǎn)動用的樞軸

4、The pin on which a gun carriage revolves
炮架樞軸炮架轉(zhuǎn)動用的樞軸

5、a gun carriage elevated so that the gun can be fired over the parapet
一種很高的槍架，人們可以憑借它來在胸墻上方射擊。