期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
论如何用两图法提高试验室的管理效率
1
作者 李晋 《住宅与房地产》 2019年第5期269-270,共2页
试验室的管理有相应成熟的文件要求,目前都是以检测机构的形式进行的,并没有具体到项目,且检测机构的很多管理制度和方法不适用于工地试验室。可见,研究一种适用于当前形势的管理方法十分必要。文章在某市政工程项目试验室管理过程中,... 试验室的管理有相应成熟的文件要求,目前都是以检测机构的形式进行的,并没有具体到项目,且检测机构的很多管理制度和方法不适用于工地试验室。可见,研究一种适用于当前形势的管理方法十分必要。文章在某市政工程项目试验室管理过程中,依据工地试验主动性的特质,开创了两图法,在图上具体、全面、直观地安排日常工作,以期提高试验室管理效率。 展开更多
关键词 两图法 试验室 管理 效率
下载PDF
两步作图法在AutoCAD教学中的应用
2
作者 于雁荣 《机械管理开发》 2008年第3期63-64,共2页
运用两步作图法开展AutoCAD课程讲解,为培养学生的综合绘图能力,加强学生绘图技巧训练,提高学生综合素质,更好地掌握AutoCAD操作技能起到了很大的作用。
关键词 步做图法 AUTOCAD 能力 技巧 素质
下载PDF
Synthesis of lithium difluoro(oxalate)borate(LiODFB), phase diagram and ions coordination of LiODFB in dimethyl carbonate 被引量:1
3
作者 ZHOU Hong-ming XIAO Kai-wen +2 位作者 LI Jian XIAO De-min JIANG Yi-xiong 《Journal of Central South University》 SCIE EI CAS CSCD 2018年第3期550-560,共11页
A new two-step synthetic method was successfully developed to simplify the recrystallization process of lithium difluoro(oxalate)borate(LiODFB).Meanwhile,the purity of LiODFB as-prepared was determined by NMR,ICP-AES ... A new two-step synthetic method was successfully developed to simplify the recrystallization process of lithium difluoro(oxalate)borate(LiODFB).Meanwhile,the purity of LiODFB as-prepared was determined by NMR,ICP-AES and Karl Fisher measurements,respectively.The as-prepared LiODFB presents a high purity up to 99.95%.Its metal ions and water contents are under good control as well.Besides,its structure information and thermal properties were confirmed by FTIR,Raman and DSC-TGA analyses,respectively.LiODFB exerts fine thermostability and hypo-water-sensitivity and its structure information agrees well with previous literature.Furthermore,a combination of phase diagram and Raman spectroscopy were utilized to study the thermal phase behavior and ions coordination of LiODFB-DMC binary system to optimize the synthesis and recrystallization process.Although there are three types of molecular interaction forms(CIPs,AGG-IIa,AGG-IIIb)in LiODFB-DMC binary system,LiODFB can only be isolated as large single crystal solvate as LiODFB·(DMC)3/2 by slowly cooling subjected to the nucleation kinetics.Therefore,the fundamental information of our work is helpful in accelerating the application of LiODFB in Li-ion secondary batteries. 展开更多
关键词 lithium difluoro(oxalate)borate two-step synthesis recrystallization phase diagram ions coordination
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部