hollow roller  空心辊道辊; 空心罗拉; 空心滚子

distance at front roller  前罗拉喂入间距

front front axle  前前桥

Front Roller  前罗拉; 前压土轮

front roller frame  前滚轮架

front roller nip  前罗拉钳口

Hollow gravity dam with an arch in the hollow  空腹设拱坝

hollow with an arch in the hollow  空腹设拱坝

coastal front coastal front trapped wave  海岸锋陷波

Front Engine Front Drive  F.F.式车辆

front layer photocell (=front-boundary cell)  前[置]膜[层]光电管

front to front  面对面

intertropical front=tropical front  热带锋

sloping delta front and basin delta front  坡型前缘和盆型前缘

roller-ball-roller  滚柱-滚珠-滚柱

smooth roller and teeth roller  光辊和齿辊

hollow village transformation  稳定性 ClO2

(DHS)Hollow reamer  (DHS)空心扩孔器; 即─

0(#) hollow capsule  异常的; 0(#)空心胶囊