greyness

The results of cytochrome oxidase reaction were transformed into average greyness values. The spacial distribution of NeuN labeled neurons and positive area of GFAP or BDNF expression in lamina 4C of primary visual cortex were counted and the relationships between the results and RGC loss were analysed.

细胞色素氧化酶染色结果计算平均灰度值，NeuN标记的神经元计算其4C层的分布密度，GFAP和BDNF表达均计算阳性区域面积，分析结果与RGC轴突损失率之间的关系。

Describes the importance and practical value of greyness revision technique in the digital image processing, introduces in detail the principles of revision methods and their concrete processing achievements in order to provide the theoretical bases for the choices of different methods of greyness revision in practice.

描述了灰度修正技术在数字图像处理中的重要性及其实用价值，并详细介绍了各种方法的原理、实现过程及其适用范围和优缺点，为不同的实际需要选择不同的方法提供了理论依据。

In a few moments the darkness turned into a greyness ahead, and then, almost before they dared to begin hoping, they had shot out into the sunlight and were in the warm, blue world again.

一会儿工夫，前面那片黑暗就变成一片灰暗，接着，他们心里几乎还不敢开始抱有希望，这条船就穿进阳光中，重新投入温暖的蓝色天地。