常見例句The synthetic methods of 2 - methyl - 2- pentenoic acid (strawberriff)were reviewed. Their advantages andshortcomings were indicated. 本文綜述了食用香料草莓酸即2-甲基-2-戊烯酸的各種合成方法，并指出其優(yōu)缺點。 返回 strawberriff