I noted that there is a glossary function in transifex, where we can define fixed terms. It is right under the translation next to "versions", "comments" etc.
www.transifex.com/projects/p/JEM/glossary/l/de_DE/
There we can collect the fixed terms.
The added terms are then underlined in the English version of the language files and will show up below the translations, when one of the terms are in the text.
I will open a new disscussion about the German terms, so we can determine the best solution an collect them in the glossary.
[edit]Here is new disscussion:
www.joomlaeventmanager.net/forum/jem-2-0-for-joomla-2-5-community-support/8597-determination-of-german-tems-feste-begriffe-in-deutsch
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