转动阻力    rotational resistance?

转动谱    rotational spectrum?

旋转速度    rotational speed?

旋转结构    rotational structure?

旋转对称的    rotational symmetric?

旋转粘度计    rotational viscometer?

旋转对称应力    rotationally symmetric stress?

旋转体    rotator?

螺桨灯    rotor modulation?

转子    rotor?

粗略计算    rough calculation?

粗糙的    rough?

粗糙度    roughness?

周角    round angle?

铰接端    rounded end?

铰接支座    rounded support?

劳思稳定性判据    routh criterion of stability?

劳思方程    routh equation?

劳思函数    routh function?

航线    routing?

似橡胶弹性    rubber like elasticity?

擦    rubbing?

方向舵    rudder?

噪声    rumble?

瘤    run off?

叶轮    runner?

活顶尖    running center?

怜坐标    running coordinate?

速移裂纹    running crack?

惯性运动    running out?

旋转轴    running shaft?

廉    running water?

行波    running wave?

无负载运转    running without load?

断裂能量    rupture energy?

断裂强度    rupture strength?

断裂应力    rupture stress?

断裂试验    rupture test?

断裂功    rupture work?

破裂    rupture?