Pneumatic positioner valve
[化] 气动阀门定位器
🧩 词语组成解析
[化] 定位器
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
Subway transportation is very advanced in Longdon.
伦敦地地铁非常先进。
He did not conclude that Anna had misunderstood.
他没法断定安娜是否存在误解。
She played basketball after school, and then walked home.
放学后她打了篮球，然后步行回家。