交叉矩阵

if the professor dont much care about that, it should be no problem. good luck

交叉矩阵

this question was answered many times before, you should check it.

交叉矩阵

我想德国大学和研究机构都是面向国际的，网站都会有其他语言的版本，英语是肯定有的，若没有，那也许是说不要外国人。祝好运。