常见例句Analysis of Ethyl Cyanoformate and Ethyl Chloroformate by Gas Chromatography 氰甲酸乙酯和氯甲酸乙酯的氣相色譜分析methyl cyanoformate 氰甲酸甲酯ethyl cyanoformate 氰基甲酸乙酯cyanoform 氰倣,三氰基代甲烷 返回 cyanoformate