回油孔阀式喷油泵
Bosch spill-valve injection pump
回油孔式喷油泵
Bosch helix-controlled fuel pump
减压阀回油孔
pressure reducing valve return port
可收回过油管射孔器
retrievable through-tubing perforator
回油油泵台架试验技术条件
scavenge oil pump bench test specification
燃油回油压力调节阀
return fuel pressure regulating valve