Wagner
[电] 瓦格纳接地法
🗣️ 情景例句
Let me try it on.
让我试试看。
Sure, what did you want to know?
真的，你想知道什么呢？
Ethanol is more effective at a concentration of 50-70 percent;
乙醇的浓度为50％至70％时比较有效，