Finally, the pore space of the permeable formations must not be so filled with swelling clays or mineral cements deposited by ground waters that the permeability will be reduced to the point that the oil cannot be pumped out of the formation.是什么意思_Finally, the pore space of the permeable formations must not be so filled with swelling clays or mineral cements deposited by ground waters that the permeability will be reduced to the point that the oil cannot be pumped out of the formation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句