再转换    reconversion?

自记风速计    recording anemometer?

回复蠕变    recovery creep?

回复曲线    recovery curve?

回复效应    recovery effect?

形状复原    recovery of shape?

恢复速率    recovery rate?

回复    recovery?

矩形梁    rectangular beam?

直角座标    rectangular coordinates?

矩形板    rectangular plate?

方形波    rectangular wave?

直线运动    rectilinear motion?

直线的    rectilinear?

复现率    recurrence rate?

循环    recurrence?

折合纵向弯曲长度    reduced buckling length?

应力集中因数    reduced factor of stress concentration?

折合长度    reduced length?

约化质量    reduced mass?

约化模量    reduced modulus?

约化转动惯量    reduced moment of inertia?

折合周期    reduced period?

换算压力    reduced pressure?

等效应力    reduced stress?

换算温度    reduced temperature?

换算速度    reduced velocity?

减压阀    reducing valve?

减少负荷    reduction in load?

还原法    reduction method?

断面收缩率    reduction of cross section?

压力下降    reduction of pressure?

每道次压下量    reduction per pass?

减速比    reduction ratio?

减少    reduction?

多余杆件    redundant bar?

超静定方向    redundant direction?

多余杆件    redundant member?

剩余反力    redundant reaction?

振动片式频率计    reed frequency meter?

簧片频率    reed frequency?

再进入    reentry?