Volatile acidity (VA) General term for the substances in wine that are formed by the oxidation of alcohol (mainly acetic acid and ethyl acetate).
由于酒精氧化而形成于葡萄酒中的物质的总括（主要是醋酸和乙酸乙酯）。
The synthesis and refinement method of isoamyl acetate with solid acid catalyst are studied. The proper operating conditions of the experiment are given.
本文采用固体酸为催化剂，研究了乙酸异戊酯的合成及精制方法，并给出了适宜的实验操作条件．。
It must be doubted that ventilation has any significant effect on the preservation of objects which themselves are the pollution source, such as stacks of acid paper, or decaying acetate film sheets.
如果文物本身就是污染物来源，例如酸性纸张、或者已经老化的醋酸纤维胶片，我们怀疑通风也不可能起到的很大作用。
It must be doubted that ventilation has any significant effect on the preservation of objects which themselves are the pollution source, such as stacks of acid paper, or decaying acetate film sheets.
如果文物本身就是污染物来源，例如酸性纸张、或者已经老化的醋酸纤维胶片，我们怀疑通风也不可能起到的很大作用。
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