guide piston complement for fuel pump  喷油泵导向活塞总成

Modification of the test rig for oil pump  机油泵试验台的改造

residue oil pump for the pressure reduction tower bottom  减底渣油泵

self-lubricating in-line pump for oil transfer  自润滑管道输油泵

substitute fuel for oil  代油燃料

water-flooding pump for oil field  油田注水泵

boiler fuel oil pump  锅炉燃油泵

Fuel Oil Pump  重油油泵; 燃料油泵; 燃油泵

fuel oil pump assembly  燃油泵总成

fuel oil pump crank arm  燃油泵曲臂

fuel oil pump plunger sleeve  燃油泵柱塞套

fuel oil pump spring  燃油泵弹簧

fuel oil pump tappet  燃油泵挺杆

fuel-oil pump governor  油泵调节器

oil fuel pump  油燃料泵

oil-fuel pump  燃料油泵

jet flow gallery ventilation for tunnels with one inclined shaft and two parallel tubes  单斜井双正洞射流巷道式通风

system control for ventilation and smoke exhaust  通风与排烟系统控制

ventilation for lowering temperature  通风降温; 降温通风