分级指数 pain rating index ; PRI
粗饲料分级指数GI Forage Grading Index
痛分级指数 pain rating index ; PRI
疼痛分级指数 pain rating index ; PRI
粗饲料分级指数 grading index
分层级指数交易 Tranched Index Trades
分级抑制浓度指数 FICI ; fractional inhibitory concentration index ; FIC
及评价指数分级标准 EISGFA
道琼斯指数分级 grading dow
分级和CT严重指数 CT severity index
结合相对时间坐标系的概念，提出了一种改进的指数预测模型及其分级预测方法，并对双曲线模型进行了推广。
According to the concept of relative time coordinate system, a new exponent model and its grade predicting method are proposed.
本文提出的功效指数法建立了综合评价环境污染控制设施的分级标准。
The classification standard of comprehensive evaluation of environmental pollution control installations has been established by the efficacy index method that put forward in this article.
对该分级标准及回归模型的拟合检验结果表明，当蚜情指数小于80、抽样量在100株以上时，对蚜量的估计可达90%的准确度。
Test of goodness of fit proved that when the index of aphid degree was less than 80 and the samples were more than 100, the quantity estimation accuracy was as high as 90%.
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