Variac
[电] 通用无线电公司的可变变压器的注册商名
🗣️ 情景例句
Then Grandpa, Robbie,
那么爷爷 ，Robbie，
Is the production line fully attomatic?
生产线是全自动的吗？
If we buy the smaller one, the IBM PC386, we might have to change it in a few years' time for a bigger one.
如果我们买一台较小的IBM386的话，过几年可能就得换一台较大的机子。