主变速器 meaning in Chinese

basic tra mi ion
basic trnasmission
combinatory transmission

The main transmission and transfer can adjust their lubrication oil highness respectively and improve the transmission efficiency
主变速器、分动器独立润滑，能合理调整各自润滑油面，有效提高传动效率。
Main transmission fully succeed and developed the zm001 series products , the maturity and series guarantee the reliability of the products
主变速器全面继承和发展了zm001系列产品，其成熟性、系列化保证了本产品的可靠性、通用性。
The main gearbox shifts gear by hand 。 distance control ， the gearshift mode is double h . the auxiliary gearbox shifts gear automatically by compressed air
主变速器为手动换档，可远程操纵或直接操纵，双h式换档方式，副变速器由压缩空气自动换档。