用“smokeless powder”造句大全，smokeless powder造句
Acellulosenitrateusedasacomponentofsmokelesspowder.nitrocellulosecontainingarelativelylargeamountofnitrogen;highlyexplosive;usedinmakingsmokelesspowder.Itbecameobsoleteinthe1880swhentheinventionofsmok...
用“smokeless industry”造句大全，smokeless industry造句
1、Tourism,asmokelessindustry,isdevelopingrapidlyinChina.2、Knownas"smokelessindustry"andthe"eternalsunriseindustry"ofthereputationofthetourismindustry,isanenvironmentallysensitiveindustry.3、Thep...