?焊冠    reinforcement of weld

?退料    rejected material

?相对运动    relative motion

?相对运动雷达    relative motion radar

?相对横摇    relative rolling

?相对转动效率,相对水流因子    relative rotative efficiency (or flow factor)

?相对速率    relative speed

?相对值    relative value

?相对速度    relative velocity

?相对波形高    relative wave elevation

?替续器    relay

?继电器箱,电驿箱    relay box

?替续器调速器    relay governor

?放泄,释放    release

?放泄旋塞    release cock

?放泄管路    release line

?释放压力    release pressure

?施放轨    release track

?放泄阀    release valve

?释放装置    releasing device

?受补船    releiving ship

?可靠性    reliability

?调压环    relief frame (or ring)

?调压环    relief ring (or frame)

?泄压阀    relief valve

?调压环    relieve frame (or ring )

?调压环    relieve frame (or ring)

?备用灯    relieving lamp

?应急舵具    relieving tackle

?再液化装置    reliquefaction plant

?磁阻    reluctance

?余料    remainder

?余水    remained water

?远隔批次作业    remote batch processing

?遥控    remote control

?液面遥示器    remote level indicator

?遥控阀    remote operated valve

?遥控载具    remote operated vehicle (ROV)

?遥控水位计    remote water level gauge

?可移压载    removable ballast

?裂口,裂隙    rend

?澄清柜    renovating (or setting) tank