Electron-resonance magnetron
[电] 电子谐振磁控管
🗣️ 情景例句
I don't know what I should have done without your help.
要不是您的帮助,我真不知道该怎么办。
We continually wage war on them, for they contaminate our food, carry diseases, or devour our crops.
人类不断同昆虫斗争,因为昆虫弄脏我们的食物,传播疾病,吞噬庄稼。
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