In the light of the definition of oil-bearing grade the authors calculated the theoretical relative distribution of S1+S2 of different oil-bearing grade which later on was proved.是什么意思_In the light of the definition of oil-bearing grade the authors calculated the theoretical relative distribution of S1+S2 of different oil-bearing grade which later on was proved.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句