1.0038和1.4571为何材质? 数字代号: 1.0038 材料牌号: s235jrg2 标准: din 国家与地区: germany 钢组: 结构钢 次级类别: din 1652-2 bright steels; steels for general structural purposes 注释: technical delivery conditions; replaced by din en 10277-2 用途: steels for general structural purposes 对应国内材料 q235b gb / china q255a gb / china u12355 gb/ china 1.4571也是德国标准牌号x6crnimoti17-12-2 相当于国内0cr18ni12mo2ti查看更多
请教一个格式试剂制备的问题? garst, john f.; ungvary, ferenc; baxter, james t. journal of the american chemical society, 1997 , vol. 119, # 1 p. 253 - 254 去学习下这个文献!!1查看更多