hydraulic oil return line 液压油回油管路
diverter valve oil return line 分流器阀回油管路
pressure of oil return line 回油背压
turbocharger return oil line 涡轮增压器回油管路
return oil line 回油管路
relief valve return oil line 安全阀回油管线
impact hammer return oil line 冲击式锻锤回油管路
return line oil 回油管油
Supervisor Road: including oil suction line, pressure oil pipeline and oil return line, used to achieve the transfer of pressure energy.
主管路：包括吸油管路，压油管路和回油管路，用来实现压力能的传递。
New development in ill feet Carnival cruise liner, today the coast guard says the engine room fire that knock down power to the vessel is caused by leaking a few oil return line.
“凯旋嘉年华”号邮轮事故调查有了新进展，今天海岸警卫队表示，致使邮轮发动机室着火并切断邮轮电力的原因是回油管路泄露。
Drain line: the hydraulic components leaked oil into the return pipe or tank.
泄油管路：将液压元件泄露的油液导入回油管或油箱。
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