downhill grade
... downhill casting 顶浇,上注 downhill grade 下坡道 downhill turn 滑降转弯 ...
[矿业] gug
... guard magnet 防护磁铁 gug 下坡道 guide coupling 导管连接器 ...
descending gradient
... descending grade 下坡;下坡道 descending gradient 下坡;下坡道 descent 坡道 ...
steep descending gradient ; steep down gradient
long heavy down grade
Downhill Drift