@erh.germany, @mountain.phil28, @sco I will answer in English, as usual (too long for me to do it in German):

• We won't vote for a single users two articles (whatever they are) of the same day. We prefer to share our VP with more different Steemians
• STEM articles in German that are translation from STEM articles in English (or vice versa) are both eligible to upvotes. I sometimes translate (okay it is more an adaptation than a translation but fine) my own posts in French.
• Note also that there is a strict (although kind of loose) limit of upvotes per week per user (don't expect us to strongly vote 10 of your articles per week :p)

So please go ahead with translations!