The chemical structure of sulfurized calcium alkyl phenolate lubricant additive has been stu died by means of IR spectra and 1H, 13 C NMR spectra.是什么意思_The chemical structure of sulfurized calcium alkyl phenolate lubricant additive has been stu died by means of IR spectra and 1H, 13 C NMR spectra.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句