环脊? ring ridge
活塞环区? ring zone
道路负荷试验? road load test
压路机 road machine
筑路工程用车? road machine
压路机? road roller
推土机 road roller
道路试验法? road test method
道路列车? road train
道路车辆? road vehicle
摇臂? rocker arm
摇臂支架? rocker arm bracket
活塞环区? ring zone
道路负荷试验? road load test
压路机 road machine
筑路工程用车? road machine
压路机? road roller
推土机 road roller
道路试验法? road test method
道路列车? road train
道路车辆? road vehicle
摇臂? rocker arm
摇臂支架? rocker arm bracket
摇臂轴? rocker arm shaft
滚轮式燃油喷射泵? roll fuel injection pump
滚柱? roller
空气阻力 roller
转鼓? roller
滚轮挺杆? roller tappet (lifter)
滚动阻力? rolling resistance
当量惯量 rolling resistance
车厢可卸式汽车? roll-off skip loader
全挂车 roll-off skip loader
翻车? rollover
转子发动机? rotary engine
旋转式燃油喷射泵? rotary fuel injection pump
旋轮线转子发动机? rotary trochoidal engine
转子轴颈? rotor journal
转子式机油泵? rotor-type oil pump
例行检查试验? routine inspection test
驶离道路? run off the roadway
运转损失? running losses
electronic controlled EGR system EG R冷却器
EGR control valve EG R调压阀
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