This paper introduced the graphs based on k_n connecting relations,and studied the coloring of these graphs and FCC by using "folding method".
引入了一类基于连接关系的图,并结合“折叠法”对该类图的着色问题与四色猜想进行了研究,给出了四色猜想的一个必要条件和一个等价命题的证明。
The synthesized polymer was neutralized by dimethylaminoethanol, and then applied as the connective materials, flexograph tetracolor superimpose printing inks.
以偶氮二异丁腈为引发剂 ,用N ,N 二甲基乙醇胺为中和剂 ,将甲基丙烯酸甲酯 (或苯乙烯 )、丙烯酸丁酯、丙烯酸和N 羟甲基丙烯酰胺四元单体共聚反应、合成了适用于柔性版四色套印水性油墨的分散树脂和成膜树脂 ,用上述制备的树脂为连接料 ,开发了一组三原色加黑色的四色套印的水性油墨 ,通过对树脂和油墨的各项指标进行检测 ,结果表明 :树脂和水性油墨的各项性能符合国家标准 ,重金属含量经香港SGS检测符合美国州际立法标准 ,有机挥发物含量远低于国内同类产
Through analyse on technical properties and functions and so forth factors of four-colors offset printing, research and probed into that how heighten coloured printing quality, and to provide still better nourishment for the mind among the society.
通过对四色胶印工艺特点、性能等因素的分析,研究并探讨了如何提高彩印质量,向社会提供更好的精神食粮。
Withthe comingout of ceramic four-colorprinting technology,ink jet printing technology in ceramic industry will soon be put into reality.
随着陶瓷四色印刷技术的问世,喷墨印刷将能够很快实现产业化生产,其应用也将给陶瓷的装饰———无论是在装饰手法﹑装饰效果还是在陶瓷色釉料新产品的开发上带来一场革命。