Sgm
abbr. spark gap modulator 火花隙调节器
🗣️ 情景例句
Nobody knows how to do it.
没有人会打。
I'd like to buy an excursion pass instead.
我要买一张优待票代替。
Instruments have been devised and can be so placed that all three elements can be recorded in different graphs.
已经设计出了一些仪器，它按照一定的安放方式就可测绘出这三种运动的曲线图。