There exist many problems for the logarithm linear regression formulations during estimating the cost of airborne avionics system.
在估计机载航电系统费用时，对数线性回归估算关系式存在许多问题。
2
It is shown that the statistical data from survey units, which describe the scale of social and economic system, must be approximately subordinate to logarithm normal distribution.
证明在社会经济系统中，反映研究对象规模大小的统计数据近似服从对数正态分布。
3
The results show : there is a liner additive relationship between the logarithmof activity coefficients of solute in two or, three component co-solvent system and volume fractions of each components.