1、The relative speed between driving wheel and pin rail varies with sinusoidal function.
驅(qū)動(dòng)輪和銷(xiāo)軌的相對(duì)速度按正弦函數(shù)變化。

2、Our special speedometer shows that the relative speed between the two trains is 20 MPH.
我們特制的測(cè)速儀表現(xiàn)這兩列火車(chē)的相對(duì)速率是每小時(shí)20英里。

3、But, if you run the motor power at around 60 you will get a relative speed of 6-10 feet per minute.
但是，如果您運(yùn)行的電機(jī)功率約為60你會(huì)得到一個(gè)相對(duì)速度為每分鐘6 - 10米。

relative speed翻譯