... 乙叉 ethydene 乙叉基 ethidine 乙叉撑 ethenylidene ...
基于42个网页-相关网页
·2,447,543篇论文数据,部分数据来源于NoteExpress
ethylidine
There is little study on the selection of liquid of pre - filming after the acid wash by hydroxy ethidine phosphonic acid (HEDP).
羟基乙叉二膦酸酸洗后预膜液的选择较少有人研究,而适当的预膜钝化是防止酸洗后金属表面返锈的必要措施。
youdao
应用推荐
模块上移
模块下移
不移动