roller-compacted concrete gravity dam [水利工程]碾壓混凝土重力壩碾壓混凝土壩roller-compacted concrete construction [水利工程]碾壓混凝土施工roller-coaster swap [經(jīng)濟(jì)學(xué)]過山車掉期roller-coaster 過山車roller-chain gate [能源科學(xué)技術(shù)]鏈輪閘門roller-bit hole rig [經(jīng)濟(jì)學(xué)]牙輪鉆機(jī)roller tractor 輪式拖拉機(jī)roller towel （兩頭縫結(jié)，套在木頭或金屬滾軸上用的）環(huán)狀擦手毛巾。roller tappet 滾輪挺桿；滾柱挺桿roller stamping die 輥?zhàn)記_壓模roller skating rink 旱冰場(chǎng)roller skating 滑旱冰roller skate 四輪滑冰鞋；輪式溜冰鞋roller shutter door 卷簾門roller shutter 卷閘，卷簾百頁(yè)roller set bore diameter [機(jī)械工程]滾子組內(nèi)徑roller screen printing machine [機(jī)械工程]篩網(wǎng)花筒印花機(jī)roller rocker 滾輪搖臂roller ring mill [土木建筑工程]中速輥式磨煤機(jī)roller raising machine [經(jīng)濟(jì)學(xué)]拉毛機(jī)