It is put forward that using practical oil production information ascertains the important parameter namely well pattern index in Xierkaqiaove formula.
本文一方面结合油田实际生产资料确定了谢尔·卡乔夫公式中的关键参数，井网指数。
It was proved that the established index model could be used to well-explain the distribution pattern of sandstorm frequency in the study region.
建立的气候影响指数模型，能够用来解释当前浑善达克沙地沙尘暴频率的分布格局。
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