Mechanism analysis shows that structural defects are the root cause of uns table blowdown performance of secondary filter screen .
机理分析表明,结构上的不足是导致二次滤网排污性能不稳定的根本原因。
Spot censorship , it is to show environmental protection department is other perhaps lawfully the ministry door of exercise environment supervisory administrative power , right administer the blowdown circumstance of unit of the blowdown inside limits and the system that pollute the circumstance such as processing to undertake the spot is checked .
Special industry still needs more certificate to need a yearly check , mine company has additionally : business certificate of product of safe production licence , blowdown licence , mining power license , mine ; gas station has additionally : finished product oily business certificate .