The efforts on closedown and suspension of small sugar refineries, small saccharin refineries and small paper mills are also being carried out in steps.关停小糖厂 、 小糖精厂、小造纸厂的工作也已逐步展开.Hence the sitting of refineries is at a d...
After it has been treated in refineries it has many different uses.经过炼油厂加工后它就有多种不同用途了.This not only abbreviates catalytic cracking equipment, but also enhances the economical effects of refineries plant.这样不仅缓和了催化装置的操作, 而...