SYNTHESIS AND CHARACTERIZATION OF METALLOCENES CONTAINING TERT-BUTYL SUBSTITUTED CYCLOPENTADIENYL LIGANDS AND THEIR ACTIVITIES IN ETHYLENE POLYMERIZATION是什麼意思_SYNTHESIS AND CHARACTERIZATION OF METALLOCENES CONTAINING TERT-BUTYL SUBSTITUTED CYCLOPENTADIENYL LIGANDS AND THEIR ACTIVITIES IN ETHYLENE POLYMERIZATION在線翻譯_英語_讀音_用法_例句