Modified some Chinese translations.

[60TPLewandowskiego]

Hello. I'm a GregTech Community Edition mod player from China. I have modified some wrong Chinese translations and added some new ones on my pull request.
here is the txt type of new version of zh_cn.lang:

zh_cn.txt

[60TPLewandowskiego]

哈氏合金=Hasterlloy
Ultimet合金=Ultimet