What kinds of airreturn should be used depend on standard of clean room.
回风形式还需依净化室的标准级别来决定。
2
Measures the clean class for a practical engineering adopting airreturn from corridor, and the results show that the mode is feasible.
对采用走廊回风的实际工程进行了洁净度检测,结果表明走廊回风是可行的。
3
The importance for the mine to strengthen the maintenance of the airreturn way and the points needing attention in designing and allocating the ventilation shaft are pointed out.