有關extender的精選大全

用extender造句子,“extender”造句
ModificationofethylenediamineasapolyureachainextenderInfluenceoftheacetylatingchainextenderm-phenylenediamineonthepropertiesofpolyureaThesecondistoaddapetrol-drivengeneratorknownasa"rangeextender".S...
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