结合三山岛金矿的具体情况，因地制宜地研究应用了以回风侧为主的多级机站通风系统模式。
In line with the local conditions of Sanshandao Gold Mine, a mode of multi-staged ventilation system mainly on the wind return side was investigated and used.
风机盘管的送风口与回风口不在同一水平面时(如送风口为上侧送、回风口为上回)，送风口与回风口距离可相对近一些。
Fan coil air outlet and the air return are not at the same level (such as when the outlet for side inlet and outlet for the last time), air inlet and the air return distance can be relatively close.
从流体力学原理上对现场观测采空区内部进回风两侧氧浓度分布的不均衡给予更合理地解释。
The disproportion of the oxygen concentration between the inlet and return sides inside the goaf observed in the field is rationally explained from fluid mechanics principle.
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