... 空投区域 drop (dropping) zone 空投高度drop altitude 落锤锻造 drop forging ...
双语例句
1
Particle concentrations in the upper atmosphere drop regularly as the altitude rises.
在高层大气中粒子浓度随高度的增加而有规律地下降。
2
Furthermore, with the increase of the total altitude gaps of hills, the maximum inverse temperature gaps decreased when the drop-join and grades of slopping fields were not changed.