principle of substitution

As an operation for trial, exploration and technology used by the ancients, with the principle of mystery and fantasticism, alchemy surprisingly at last became the substitution of deceiving.

它作为古人的一种试验、探索、技术操作，循着神秘而荒诞的思路，却成了行骗的代名词。

The effect of a small amount of Me2+ substitution and trace impurities doped on stabilize ferroelectric phase was explained qualitatively by thermodynamic entropy stabilization principle.

并以热力学熵稳定原理，定性地解释了少量置换与微量添杂对稳定铁电相的作用。

This paper, aimed at information security, studies the general principle of digital watermark and analyses the structure of the image data file. The compression method of binary image and digital watermark algorithm based on information substitution is presented.

针对信息安全问题，研究数字水印的一般原理，对图像数据文件的结构进行了分析，给出了二值图像的压缩方法和基于信息替代的数字水印算法。