Electrotimer
n. 定时继电器
🗣️ 情景例句
He's going up the ladder pretty quickly.
他真是平步青云。
Let's go visit them.
让我们去拜访他们吧。
Oxygen is widely used in ship repairs for cutting and joining metal plates or pipes.
在船舶修理过程中，常常使用氧气切割和焊接金属板或金属管。