常见例句双语例句Distill coal tar in a tube furnace to generate 3 mix oil , and obtain crude phenol from washed 3 mix oil .煤焦油经管式炉蒸馏后，酚油，洗油和萘油馏分组成的三混馏分再经过洗涤后获得。www.koppers-china.com 返回 crude phenol