Gearbox is an indispensable mechanical transmission device, which widely used in metallurgy, mine, petroleum, power generation, engineering machine and other industries.
齿轮减速器广泛地使用于冶金矿山、石油电力、工程机械等各行各业中，是一种不可缺少的机械传动装置。
2
New Shanghai One well placed mine shaft cage wellhead engineering construction company, the third Sino-Coal is responsible for installation of mechanical and electrical installation.
新上海一号井煤矿副井井口罐笼置入工程由中煤第三建设公司机电安装工程处负责安装。
3
A conical diffuser has been widely used in mechanical and mineengineering.