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