This is the acid test, and this is where we are failing," said WHO Director General Dr Margaret Chan, speaking Tuesday at the opening session of the TDR Joint Coordinating Board.
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）。
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The sponge iron making with iron sludge produced during DSD acid-making can be used for not only general metallurgy but also iron-carbon bed to treat DSD acid oxidation wastewater.