基本解释[材料科学]桥基茂金属词组短语短语dinuclear bridged metallocene 双核桥连茂金属non -bridged metallocene 非桥联茂金属sila bridged metallocene 硅桥金属茂bridged metallocene catalysts 桥联茂金属催化剂doubly -bridged metallocene 双桥联茂金属专业释义材料科学桥基茂金属