The gas extraction effects is related to negative pressure of suction.
顶板瓦斯高抽巷的抽采效果与抽放负压直接相关。
It was found that 78% zinc extraction was obtained at room temperature and atmosphere pressure.
试验结果表明：在常温常压下，用硫酸浸出该氧化锌矿石锌的浸出率可达到78%。
The higher separating of pressure was, the lower the rate of extraction was.
分离压力升高，萃取率呈下降趋势。
The main work and administration of this machine is constant pressure extraction.
本机主要工作及管理是定压抽气。
The main work and administration of this machine is constant pressure extraction.
本机主要工作及管理是定压抽气。
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