pressure of oil return line
pressure of oil return line
回油管压力
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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。
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