SYNTHESIS AND CHARACTERIZATION OF METALLOCENES CONTAINING TERT-BUTYL SUBSTITUTED CYCLOPENTADIENYL LIGANDS AND THEIR ACTIVITIES IN ETHYLENE POLYMERIZATION是什么意思_SYNTHESIS AND CHARACTERIZATION OF METALLOCENES CONTAINING TERT-BUTYL SUBSTITUTED CYCLOPENTADIENYL LIGANDS AND THEIR ACTIVITIES IN ETHYLENE POLYMERIZATION在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句