Femitron
场发射电子微波管
🗣️ 情景例句
That's beautiful!
太完美了，真棒！
Since we are likely to place sizable orders regularly we hope that you will make some special concessions.
由于我方将定期大批量订购，希望贵方作出一些特殊的让步。
It looked as if there would be an exciting race across the Channel.
看来会有一场激烈的飞越英吉利海峡的竞争。