“炮管”造句
坦克停了下来，长长的
炮管转过来瞄准了山脊。
The tank stopped with the long snout of its gun turned to the ridge.
火焰温度较低, 因而可使
炮管寿命较长.
The flame temperature is lower, thus giving a longer barrel life.
二战时期的重型火炮的
炮管,也是这么工作的.
The heavy gun barrels of World War II animated the same way.