Frictionometer
摩擦系数测定器; 摩擦系数测定仪
🗣️ 情景例句
I remember all of you.
我记得你们各位。
I often brush my teeth in the morning.
我常常在早上刷牙。
The growth of alternative mental interests is a long process.
精神上多种情趣的培养是一个长期的过程。