derived function

Sharma [ 1] the vector-expression of ray tracing in gradient-index media have been derived and an error function is denned in this paper.

Sharma等人提出的方法，给出了变折射率介质中光线追迹的矢量表达式；并提供了一个判断计算结果可靠与否的误差函数。

A central force is one derived from a potential-energy function that is spherically symmetric.

中心力是由球对称的势能函数而来的力.

The general conclusion is derived by using the features that moment of inertia is a function of the angle of rotation and the function has extreme value.

该方法利用惯性矩是方位角的函数，且函数有极值的特征推出普遍性结论。

A distribution function of droplet volume was derived using the information entropy.

采用最大熵原理,推导出喷雾场液滴体积分布函数.

The molecular weight distribution of anionic polymerization system initiated by electron transfer and the influence of monomer transfer on the polymerization were treated theoretically. The exact expressions of molecular weight distribution function are derived according to Pepper's kinetic scheme.

本工作根据Pepper的反应机理，对电子转移引发的阴离子聚合反应以及单体链转移对这一反应的影响等问题作了理论处理，求得了分子量分布函数的精确解。