Packless valve
[化] 无填料阀
🧩 词语组成解析
[化] 未包装的; 无填充的; 无填料的
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
I think I'll need your expert assistance this afternoon.
我想，我今天下午需要你专业的协助。
Eat one's cake and have it.
又要马儿好，又要马儿不吃草。
The answer is zero.
白忙了。