Valve voltmeter
[电] 电子管电压表
🧩 词语组成解析
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;
n. 伏特计\\n[化] 伏特计
🗣️ 情景例句
How's your English coming along?
你英语学得怎样了？
Keep your mouth shut and your eyes open.
要多看少说。
Though the sound could be heard clearly, it took me a long time to react.
虽然声音听得很清楚，但我过了好一会儿才作出反应。