nozzle flapper

• 喷嘴挡板

nozzle flapper的用法和样例：

例句

1. A novel piezoelectric type nozzle flapper hydroelectric servo valve was developed and its control method was researched.
   摘要提出了一种新型压电晶片型喷嘴挡板式电液伺服阀，并对其控制方法进行了研究。