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
Well, maybe we'll see the view in the morning.
好了， 也许我们可以在早晨看风景。
You need to transfer at central station.
你必须在中央车站换车。
Would you like to come to supper?
你愿意来吃晚饭吗？