Reluctometer
磁阻签质仪(检查钢制品质量)
🗣️ 情景例句
How...?
你怎么……？
The two parties involved in a contract have the obligation to execute the contract.
合同双方有义务履行合同。
I can't do that, Mr Tiger, said the monkey.
“我不能这么做呀，老虎先生，”猴子说