Relief valve unit
[化] 保险活门装置; 减压阀装置
🧩 词语组成解析
valve
[vælv]
n. 阀;真空管;（管乐器的）活栓;（心脏的）瓣膜;
vt. 装阀于;以活门调节;
unit
['ju:nit]
n. 单位，单元;装置;个体;[数]单位数;
🗣️ 情景例句
He won't pay attention to anybody.
他不会认真倾听别人的话。
To plan a vacation trip.
计划休假的旅行。
Houses -- often three storeys high -- were built of stone.
房子一般有3层楼高，用石块修建。