beam reversal

• 光束翻转,束反向

beam reversal的用法和样例：

例句

1. The reversal of any entropychanging transformation would be neither reasonable nor possible.
   熵的任何反向变化都是不合理的也是不可能的。
2. The scarfed nozzle is used in engines which can produce reversal thrust, or to produce revolving torque on turbine rocket engines at high speed.
   摘要斜切喷管常用于产生反向推力，或产生旋转力矩使火箭高速旋转的涡轮式火箭发动机中。