A friend of mine working there told me the other day that they were in need of some volunteer keepers.
我一个在那里工作的朋友前几天告诉我，他们需要一些志愿饲养员。
According to the principle of conservation, differential equation which can describe airflow temperature distribution in state of turbulent flow in mine working face is deduced.
从守恒原理出发，导出了描述矿井回采工作面风流紊流流动和温度分布的微分方程。
It has been proved effective by late data on mine working disclosure and may provide reliable geological conditions forecast parameters for mine working development in a safe way.
通过后期该巷道揭露资料，验证了该方法的有效性，可以为巷道安全掘进提供可靠地质条件预测参数。
It has been proved effective by late data on mine working disclosure and may provide reliable geological conditions forecast parameters for mine working development in a safe way.
通过后期该巷道揭露资料，验证了该方法的有效性，可以为巷道安全掘进提供可靠地质条件预测参数。
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