尾部指标是决定分布尾部轻重的一个重要参数。
The tail index is an important parameter to decide the degree of heaviness of the tail of a distribution.
利用矿床前缘元素和尾部元素的累乘比值，确定了矿床的剥蚀程度评价指标。
The multiplicative ratios of leading elements and trailing elements were used to formulate the criteria for evaluating denudation level of the deposit.
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