An order of dicotyledonous plants including moraceae and urticaceae and ulmaceae .
双子叶植物的一个目，包含桑科、荨麻科和榆科。
A dicotyledonous family of marsh plants of order gentianales .
龙胆属沼泽植物中双子叶植物科。
Combined surveying stoma types of dicotyledonous plants survey of bacteria pollution in the air , investigating learning ways and routes were explored in biological scientific movements .
