This paper divided mine ventilation optimization into two types.
本文将矿井通风优化分为两类。
2
According to the fire ventilation, enclosure fires can be divided into two regimes: well-ventilated and under-ventilated combustion.
根据通风条件不同，受限燃烧可分为燃料控制和通风控制两种燃烧状况。
3
But even if it is a ventilation pipe is also divided into several, there is a simple dust, smoke, exhaust pipe, but also have a special rule out harmful gas pipeline.