例句與造句

1. feeding mechanism : up roller, middle flashboard and down bell jar or double bell jar feeding mechanism with hydro-automatic drive, featured as easy operation, convenient maintenance and good air-tightness
   加煤機(jī)構(gòu)：液壓驅(qū)動(dòng)自動(dòng)加煤裝置，采用上滾筒中插板下鐘罩機(jī)構(gòu)或雙鐘罩結(jié)構(gòu)，操作簡(jiǎn)單，維修方便，氣密性好。
2. It's difficult to find flashboards in a sentence. 用flashboards造句挺難的