基本解釋聚醚同根派生 copolyethers相關(guān)詞英漢例句NMR and FTIR were used to characterize the structure of terminal groups of the copolyethers.利用紅外光譜及核磁共振法表征了雙烷基聚醚的耑基結(jié)搆。copolyethers更多例句