大扭矩低速减速器设计
Large Momont and Low Speed Reducer Design
减速器油冷却器出油管
retarder oil cooler outlet line
减速器油冷却器进油管
retarder oil cooler inlet line
减速器油压检查
retarder oil pressure check
拖拉机减速器油压
tractor retarder oil pressure
NGW型行星减速器
NGW-type planetary speed reducer