释义 |
pemaCOCA¹⁵⁵⁹⁵⁴ 基本例句 =phenylethylmalonamide 苯乙基丙二酰胺 A longer PEMA block can prevent or delay the clustering of the micelles. 相反,如果 PEMA链段足够长时,则可以阻止胶束聚集的发生。361xs The sound absorption coefficients of polymethyl methylacrylate PEMA and polyvinyl chloride PVC were investigated by means of the impedance tube technique. 用驻波管技术研究了聚甲基丙烯酸乙酯 PEMA和聚氯乙烯 PVC的吸声系数。 cnki |