久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

“乙酯基”的英語(yǔ)可以翻譯為：[化] carbethoxy，ethoxycarbonyl ...

制備并得到了三種基于二乙酯基甘脲的手性分子夾的晶體結(jié)構(gòu).The X - ray crystal structures of three chiral molecular clips based on diethoxycarbonyl glycoluril were obtained....