Pnpn transistor
[电] PNPN晶体管
🧩 词语组成解析
🗣️ 情景例句
This Friday.
这个星期五。
One should travel out of his own country at least once.
我们至少应该离开自己的国度去旅行一次。
About a third of the people who had been chained up below at the beginning of the journey were missing.
旅程开始时拴在下边的人大约有三分之一已经不见了。