LaTex希腊字母 (Greek in LaTex)

问题：

LaTex 中只有数学模式内置了希腊字母字体，比如μ，只能在$\mu$模式下使用斜体，此外xeLaTex编译时用siunitx包写的部分单位会报错

解决办法：

siunitx给出的解决办法如下

siunitx: Getting the micro symbol right

I get a few e-mails about siunitx and the micro symbol. People tend to be surprised that the symbol ‘sticks’ to a look very much like Computer Modern. The reason is that picking a proper upright (not italic) μ is not so easy in TeX. You don’t get one in Computer Modern, so siunitx takes one from the TS1 (text support) set in the absence of a better plan. I’ve set up some auto-detection for a few obvious alternatives (such as the upgreek package), but that doesn’t really work for XeTeX users.

XeTeX users are likely to load system fonts, and I’d hope be using UTF-8 input. That makes it hard to auto-detect what they are doing, but should make life easier for them to get things right. A lot of more comprehensive fonts include Greek letters in the main font, so getting the μ right is simple:

\sisetup{mathsmu =\text{μ},  textmu  = μ}

or for people testing version 2 of siunitx:

\sisetup{maths-micro =\text{μ},  text-micro  = μ}

此办法对我不起作用，直接改变Greek字母的字体更直接粗暴

CTAN下有些字体包，但其它地方发现一个fourier包的字体更好看，没有在这个目录下

直接

usepackage{fourier}

解决希腊字母问题，可以采样xeLaTex或者PDFLaTex编译，都不会出错