例句與造句

1. The main gearbox shifts gear by hand 。 distance control ， the gearshift mode is double h . the auxiliary gearbox shifts gear automatically by compressed air
   主變速器為手動(dòng)換檔，可遠(yuǎn)程操縱或直接操縱，雙h式換檔方式，副變速器由壓縮空氣自動(dòng)換檔。
2. It's difficult to find main gearbox in a sentence. 用main gearbox造句挺難的