假湿绝热过程
参考答案：饱和湿空气上升过程中发生凝结，并将其凝结物全部降落，则上升时为湿绝热过程，下降时为干绝热过程。
At the news conference the Foreign Minister spoke slowly so as to ______ what he would say.
A．pass
B．weigh
C．cover
D．spread
热喷涂的方法主要有哪几种？
