The dual constitution of curriculum, the core and main body of German vocational education, plays a peculiar role in teaching and curriculum.
双元制课程模式是德国职业教育的主体和核心，在教学方面、课程方面都有其独到的特色。
WELLET'S is a professional constitution engaging in the Synthesis material of Organic silicon fluoride in German.
S是德国从事有机氟硅材料研究合成的专业机构。
WELLET'S is a professional constitution engaging in the Synthesis material of Organic silicon fluoride in German.
S是德国从事有机氟硅材料研究合成的专业机构。
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