Discussion about water quality evaluation index method in drink water source;
饮用水源水质评价指数法探讨
The forecast of the air pollutant index in different forecast area in Rizhao City;
日照市大气质量指数分区预报
A universal index formula of water quality evaluation suited to multi-parameter;
适用于多指标的水环境质量评价的普适指数公式
The Research of Exponential Measuring of Industrial Design s Evaluation Criterion;
工业设计评价标准的指数型量化研究
The exponent of the primitive two-colored directed graph D is the minimum value of h+k taken over all such h and k.
一个双色有向图D是本原的,如果存在非负整数h和k,且h+k>0,使得D中的每一对顶点(i,j)都存在从i到j的(h,k)-途径,则称h+k的最小值为D的本原指数。
A class of trigonometric Bézier curves with two exponential shape parameters;
一类形状参数为指数的三角Bézier曲线
It is concluded that the decline regularities of the total well fluid production,dry gas produc tion and conden-sate production accord with the exponential decline rule.
指数递减法是油气藏工程中的一个重要预测方法。