根据应用目的将指标分为三类： 1、判别性指标（Discriminative Index） 判别性指标常用于区分个体或人群的健康或疾病状况，在临床研究中， 常用于对疾病的诊断。
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目的：前瞻性验证前期工作中建立的以听力学指标为基础的多元判别函数对耳鸣辨证的临床价值。
Objective: Prospective certification preparatory work to establish the parameters for the hearing based on the multiple discriminant function of tinnitus dialectical clinical value.
植物水分生理指标，是判别植物抗旱性的重要依据。
The water physiological index of plant is an important basis that is used to distinguish the drought resistance of plants.
自由膨胀率是反映黏性土的膨胀性的指标之一，对判别膨胀土有较大参考价值。
Free swell is one of indexes in representing the expansibility of clayey soil and makes great valuable reference in the judgment of expansive soil.
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