The purpose of the invention is to provide a heat-variable negative recording imaging element and non-treatment planography printing plate precursor.

本发明的目的在于提供一种热敏阴图记录成像元件和无处理平版印刷版前 体。

youdao

And finally, this tool-the generating function-can be used to get some expectation and variance of random variable of continual-type non-negative distribution.

最后利用母函数这一工具求得一些连续型非负分布随机变量的数学期望及方差。

youdao

The key work variable is zero-sum vs. non-zero sum (both negative-sum and positive-sum).

FORBES: The Fundamental 2x2 of Capitalism