Barratron
非稳定波型磁控管(用以产生噪音干扰)
🗣️ 情景例句
It is OK to ask children how old they are.
问小孩多大了是可以的。
We should promote world peace.
我们应该促进世界和平。
After three hours, the men stopped for a meal break.
3小时之后，工人们停下来吃饭。