heavy oil pump 重油泵NYP320内啮合齿轮泵

heavy oil pump 重油泵

gear pump for heavy oil service 重油齿轮泵

heavy oil n.(将焦油蒸馏得到的比重大于水的)重油

oil pump 油泵

heavy fuel feeding pump 重油供给泵

heavy liquor pump 浓液泵

heavy fuel booster pump 重油升压泵

heavy gas oil 重瓦斯油

heavy hydrocarbon oil 重质烃油

heavy recoil oil 重反冲油