Kenetron
大型热阴极二极电子管(用于工业整流和 X-射线设备), 高压二极管
🗣️ 情景例句
I'd like your help.
我要请你帮忙。
I think exactly the same way.
我完全同意。
At the age of twelve years, the human body is at its most vigorous.
人体在12岁时是生命力最旺盛的时期。