down hill braking  下坡制动

down hill left turn  下山左转

down hill race  下山滑赛

down hill retarder  下坡减速器

down hill right turn  下山右转

down hill telemark swing  下山屈膝摆滑

down hill turn  下山转滑

down-hill grade  下坡度

Down-hill Side  溪谷

down-grade hill  下坡路

automatic emergency shut-down and slow-down circuit  自动应急停车和减速电路

COOL DOWN; COOLING DOWN  缓和运动

down sprue (down-gate)  竖浇道

down-comer (down take)  降流管

down-converter(down-convertor)  下换器; 降频转换器

down-gate (down sprue)  竖浇道

down-supply and down-return  下供下回

look-down shoot-down  下视下射

printed down-proof cotton cloth duck down quilt  印花防绒棉布鸭绒被