engine mallet是什么意思

用法例句

According to the structural character of tubular turbine and peculiarity of its transition process, a new weight-loaded closedown and section closing equipment is developed with inserted valves as its main parts.

针对贯流式机组的结构特点及其过渡过程的特殊性,以插装阀为主要部件,研制了新型重锤关机与分段关闭装置,其导叶第一段关闭时间为2。