averty of elene and Taeimooy of 例如 CH CH 3 3 H175℃C H顺.反.异构体为主 CH3 反.反.仅占0.005% CH H CH CH 3 3 H 175°c H反.反.为主 H CH CH Organic chemUniversity of Science and Technology of China Organic Chem 例如： CH3 H CH3 CH3 H H CH3 H 175℃ CH3 H H CH3 H H CH3 CH3 175℃ 顺 . 反. 异构体为主 反 . 反 . 仅占0.005％ 反 . 反 . 为主