Air has a low density and great compressibility. The volumetric flow rate of air in air drilling varies with pressure and temperature, which in turn, change with WLL depth.

气体不仅密度低，而且具有很大的可压缩性，所以空气钻井的体积流量将随压力和温度变化，而压力和温度又随井深变化。

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Also the fear of de-listing has been lifted since the stock has traded wll above a dollar for several months now, eliminating the need for a reverse stock split.

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