Selector valve
[化] 换向阀
🧩 词语组成解析
selector
[si'lektə]
n. 选择者，选择器;
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;
🗣️ 情景例句
My favorite type of exercise is ...
我最喜欢的锻炼方式是……。
His health has been lousy.
他的健康状况近来很糟。
it is quite reasonable to regard the sea floor as the basic form of the crust of the earth,
因此完全有理由把海床看作地壳的基本模壳，