Pentagrid tube
[电] 五栅管
🧩 词语组成解析
n. 五栅管, 七极管
🗣️ 情景例句
By the way, what are you going to do on Christmas?
顺便问一下，圣诞节你打算做什么？
How long has he been with that company?
他在那家公司多久了？
The demand for our products has kept rising.
要求定购我们产品的人越来越多。