Metering valve
[化] 计量阀
🧩 词语组成解析
n. 测光模式；计量, 测量
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
He was very helpful to me, remember?
他帮过我大忙， 记得吗？
Don't forget to call me.
不要忘记叫我。
His previous attempts had been unsuccessful.
他以前的尝试没有成功。