【化学专业英语教程】郭岚芬.pdf
内蒙古大学教材丛书 English Course of Chemistry 化学专业英语教程 郭岚芬编著 胡襄审校(本书的出版得到内蒙古大学出版基金资助)
LessonOne WHATISCHEMISTRY?Theworldinwhichweliveiscomposedofaninnumerablevarietyofmaterials.In order toexist,man must take certain ofthese materials from the environment andutilize them in oneway oranother.Therateatwhich thesematerialsare consumed and thewayinwhich they are consumedreflectsboth thed
example,petroleum,steel.rubber,paper、pharmaceuticals,electronics,transportation.cosmetics.garmenis,aircraft,television-thelist could gOn and on.Figure 1illustrates theconversion ofnaturalresources,by the chemicalindustry,intouseful products for com- merce,industry.and human needs.🔒 下载高清完整版
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