例句
Oil distillation process is the first working procedure of the refinery and petrifaction enterprise.
原油蒸馏过程是大型炼油厂和石化企业的龙头工序。
Oil distillation process is the first working procedure of the refinery and petrifaction enterprise.
原油蒸馏过程是大型炼油厂和石化企业的龙头工序。