Thus, 3 mol of Ethyl acetoacetate were treated with 2 mol of formaldehyde to yield 80% of I. Addn. of I at 0.01 g to a vanilla flavor compn. enhanced the flavour by making it more natural and imparting a coumarin-like, coconut-like aroma.是什么意思_Thus, 3 mol of Ethyl acetoacetate were treated with 2 mol of formaldehyde to yield 80% of I. Addn. of I at 0.01 g to a vanilla flavor compn. enhanced the flavour by making it more natural and imparting a coumarin-like, coconut-like aroma.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句