基本解释[经济学]页岩油母英汉例句双语例句Nearly 80% of the oil-shale kerogen can be extracted as a toluene soluble bitumen with average molecular weight about 800.可从油页岩中得到对有机质约80％的沥青抽出物（平均分子量约800）。oil-shale kerogen更多例句专业释义经济学页岩油母