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
Remember me, Malcolm?
还记得我吗 ，Malcolm？
Easier said than done.
说时容易做时难。
and that their rims are clean and dry.
瓶口清洁干燥。