稳定指数 saturation inde,Langelier index 由经验公式得出一个指数,以相对定量地预测水中碳酸钙沉淀或溶解的倾向性。以水在碳酸钙处于平衡条件理论计算的PH值的两倍减去水的实际PH值之差来表示。
胶体不稳定指数越小,胶体结构越稳定,抗老化性能越好;
The less the instability index, the more stable its colloidal structure is, correspondingly, the stronger its aging resistance.
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。
Instability index: An index which measures the variability of world prices for selected agricultural commodities.
随老化时间的延长和老化温度的升高,沥青的胶体不稳定指数逐渐增加。
With the prolonging of aging time and the going up of aging temperature, the unstable index of asphalt's gel increases gradually.
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