Economic Pneumatic Hammer是什么意思

用法例句

In the paper the theories, the characters and the advantages of this kind of tunnels are explicated and the comparisons with other intermittent tunnels such as shock tunnel, gun tunnel and Ludwieg tube are carried out.

阐述了忽略活塞质量时等熵轻质活塞风洞的工作机理及其特征,并与激波风洞、炮风洞和罗德维奇风洞等暂冲式风洞进行了比较,从而为不同情况下选择不同类型的风洞提供了 依据。