主油路 meaning in English

main feed

( 4 ) in order to improve the system and its working function , a hydraulic controlled direction valve is connected in the main oil circuit to control the differential of the piston . then the dimentions of the cylinder and the piston are reduced , improving the working properties
广东工业人学工学顾十学位论义（ 4 ）为进一步改进设计方案，提高其工作性能，在主油路中加一液动换向阀，控制活塞的差动，从而将减小油缸和活塞的尺寸，提高工作性能。
A pressure transducer was set up in this system to realize pressure control in main lines and adjustment of pump operating time ; the distributors were designed to accomplish grease storage in fixed quantity and transport them into all lubricating points ; the single chip microcomputer was utilized to control interval lubrication and realize auto - lubricating or fault alarm
系统通过设置压力传感器实现主油路的压力控制和油泵工作时间的自动调节，通过配油器实现定量储油和将油脂输送至各润滑点，通过电子监控器设定加脂间隔时间，实现自动加脂与故障报警。