英语词典
Anatomise the energy change of the oil zone and injection steam during soak period, the reasonable calculation formula to calculate the time of soaking is deduced.
详细剖析了焖井过程中油层和蒸汽的能量变化,推导了焖井结束后加热半径的计算公式,推导出确定焖井时间的合理计算公式。
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Change the engine oil.
换机油.
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