We can compare and analyze the difference of the resistance properties when there are different relative opening areas and positions. Thus the factors influencing the airflow rates can be found.
可以比较分析不同相对开口大小和不同相对位置的通风房间的阻力特性不同，得到引起通风流量不同的原因及其影响因素。
The results show that, with the changes of the relative velocity of the airflow, the instability of the system will occur suddenly;
结果表明：随着相对进气速度的改变，系统将会发生突然失稳；
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