methylurean.甲脲methyln.甲基；木精methyl propyl ketoxime甲基 丙基甲肟methyl carbitol acetate甲基卡必醇醋酸酯methylotrophic bacteria甲基营养菌methyl dihydroergotoxin瑞得金{商}Methyl mercury chloride氯化甲基汞（MMC）methylhydrochlorosilane甲基氢氯硅烷methylguanidine sulfate硫酸甲胍methyl-amino-purine甲基氨基嘌呤methyl butyl-carbinol甲基丁基甲醇methyl isopropyl ketone甲基异丙酮