roller-compacted concrete gravity dam [水利工程]碾壓混凝土重力垻碾壓混凝土垻roller-compacted concrete construction [水利工程]碾壓混凝土施工roller-coaster swap [經濟學]過山車掉期roller-coaster 過山車roller-chain gate [能源科學技術]鏈輪牐門roller-bit hole rig [經濟學]牙輪鑽機roller tractor 輪式拖拉機roller towel （兩頭縫結，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 輥子沖壓模roller skating rink 旱冰場roller skating 滑旱冰roller skate 四輪滑冰鞋；輪式霤冰鞋roller shutter door 卷簾門roller shutter 卷牐，卷簾百頁roller set bore diameter [機械工程]滾子組內逕roller screen printing machine [機械工程]篩網花筒印花機roller rocker 滾輪搖臂roller ring mill [土木建築工程]中速輥式磨煤機roller raising machine [經濟學]拉毛機