Homodyning
零差探測(cè)
??? 情景例句
Please sit down, Mr. Stewart.
請(qǐng)坐， Stewart先生。
When did you get off work?
你什么時(shí)候下班？
No, thanks. It's big, but it isn't heavy. It's light.
不用了，謝謝，是大盒子，但不重。很輕。