Frictionometer
摩擦系数测定器; 摩擦系数测定仪
🗣️ 情景例句
What about the salary?
薪水怎么样？
Can we make the 5:30 train?
我们能赶上5:30的火车？
He did not see the bag until it was too late.
等他看见袋子时已经太晚了。