Semipotentiometer
半电势计, 半电位计
🗣️ 情景例句
We usually accept payment by irrevocable L C payable against shiping documents.
我们一般用不可撤销信用证，凭装运单据结汇付款方式。
Science is organized knowledge.
科学是系统化的知识。
The boy mustn't go to school yet,Mr.Williams.
这孩子还不能去上学，