例句與造句

1. many engineering pairs such as the wheel-and-rail combination described in section 8. 2. 1 generate elliptical contact areas .
   工程上的許多運(yùn)動組合，諸如821節(jié)中所描述的車輪與鋼軌組合，都產(chǎn)生橢圓接觸面。
2. many engineering pairs such as the wheel-and-rail combination described in section 8.2 . 1 generate elliptical contact areas
   工程上的許多運(yùn)動組合，諸如821節(jié)中所描述的車輪與鋼軌組合，都產(chǎn)生橢圓接觸面。
3. It's difficult to find elliptical contact in a sentence. 用elliptical contact造句挺難的