1) down hill retarder
下坡减速器
2) Retarded Down Grade Lane
减速下坡车道
1.
Study and Experiment on the Retarded Down Grade Lane for Continuous Long and Steep Downgrade Sections in Mountain Terrain;
山岭重丘连续长大下坡路段减速下坡车道研究与实验
3) down-hole reducer
井下减速器
1.
This paper presents structure features of down-hole reducer,and analyzes the available transmission schemes which contain fixed-axis gear-train transmission,2K-H type planetary gear-train transmission,3K type planetary gear-train transmission and planetary gearing with small tooth transmission according to the structure features of the down-hole reducer.
结合井下减速器的结构特点,分析了定轴轮系传动、2K-H型行星轮系传动、3K行星轮系传动、少齿差行星轮系传动4种传动方案,选择内齿作为输出轴的少齿差行星轮系传动方案更符合涡轮钻具的传动要求和井下工具结构特点。
4) descending speed
下坡速度
5) retarder control
(下坡)缓速器操纵件
6) slow up; slow down
减速;慢下来
补充资料：车道
1.车马往来的道路。后专指车辆行走的道路。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条