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