The light protection behaviour of hindered amine light stabilizer Tinuvin-770 is studied by IB, BSR, NMR as well as observation of a mechanical property of Tinuvin-770 containing polypropylene film.是什么意思_The light protection behaviour of hindered amine light stabilizer Tinuvin-770 is studied by IB, BSR, NMR as well as observation of a mechanical property of Tinuvin-770 containing polypropylene film.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句