Instability index: An index which measures the variability of world prices for selected agricultural commodities.
不稳定指数：一种用于衡量部分农产品的国际价格变动的指数。
The less the instability index, the more stable its colloidal structure is, correspondingly, the stronger its aging resistance.
胶体不稳定指数越小，胶体结构越稳定，抗老化性能越好；
Considering the sensitivity of virtual nodal voltage to line reactance and variation of reactive power of power grid comprehensively, the voltage instability index is put forward.
综合考虑节点电压关于线路电抗和系统无功功率变化的灵敏度，提出了电压失稳指标。
The traditional fitness measure is not suitable for the stabilization problem, and therefore we define an instability index which is better and more effective for evaluating the chromosome fitness.
传统的健康度测量方法不适合镇定稳定问题，因此本文定义了不稳定指数，它可以更好地，更有效地评测染色体的健康度。
It is proposed a new stability margin index for evaluating the severity of single branch instability contingencies and a new sensitivity method for preventive control of this kind of contingencies.
提出了一种新的用于评估支路型失稳故障严重程度的指标，并提出了一种可用于预防支路型失稳故障的灵敏度方法。
Therefore, this paper proposes a method to calculate the probability of voltage instability based on the stochastic characteristic of load margin index.
针对这种情况，提出了一种基于负荷裕度随机特性的方法来计算系统电压失稳的概率。
The problem of wellbore instability has been puzzling drilling operations all the time, and to quantify the permeability of shales is an important index to estimate shale-borehole's instability.
井壁失稳一直是困扰油气井工程的难题，泥页岩渗透特性的定量测定是评价泥页岩井壁稳定性的重要指标之一。
Warning index pattern show convective instability characteristic and high energy.
它能预示强对流天气层结的不稳定特征和高能量。
Warning index pattern show convective instability characteristic and high energy.
它能预示强对流天气层结的不稳定特征和高能量。
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