toefl机经
tube8asian
考研英语一和英语二的区别
双眼皮胶水怎么洗
desireeCATAIYTICSYNTHESIS0FPRENYLALCoHoLPRoCESS
RESEARCH公共英语三级成绩查询
ABSTRACT
PrenylalcoholismainlyusedforsynthesisofintermediatestoMethyl一3,3一dimethyl-4-Pentenoateforeffici:ency.andlowtoxicitypesticidesofthepyrethroid,anditsdownstreamproductsdichlorochrysanthemate,3一(2,2一Dichlorovinyl)一2,2一dimethylcyclopropanecar
chloride.Withprenylalcoholconstantlyexpandedthescopeofbonyl
财务会计和管理会计
杨澜访谈录希拉里applicationanddemandrisedceaselessly,strengthenthestudyofsynthesisforprenylalcohol,itisverynecessarytoachievelarge—scaleindustrialproduction.
Thispaperselectstheisopreneanddichloroaceticacidcatalyticasrawmaterials‘catalyticsynthesisforprenylester,followedprocess’bysaponificationreactionpreparationofprenylalcoh01.ImprovedcatalyticsynthesisprocessconditionsSOthatthereactionisnotundertheprotectionofinertgas,improvedthesafetyandstabilityoftheprocess.Withtherapiddevelopmentofethyleneindustry,theC5asanimportantbyproducthasbecometheindispensableimportantresource,usingisoprenewhichisbasic
摩登英语
传单英文IIl