.设计对水印系统进行公正的比较和评价方法。在这方面己经有部分学者作了一些初步的研究，但缺乏普遍性和原理性，对水印系统的脆弱之处仍无法进行全面的测试与衡量。-. Watermark system designed just for comparison and evaluation. In this regard, some scholars have been some preliminary research, but the lack of universality and the prin

MATLAB读取NC数据的命令,具体过程和操作步骤-MATLAB command to read the NC data, specific processes and procedures

用matlab实现对nc数据的合并，特别是对CMIP气温和降水数据的合并-combine netcdf