对二氧化硅溶胶进行酸处理后再提纯，可以大大加速提纯过程并消除氨水对二氧化硅粒子化学稳定性的影响。
The purification of silica sols was accelerated after acidification, and the influence of ammonia on chemical stability of silica particles was eliminated.
它们用提纯油、大蒜和红辣椒混合爆炒，再裹在墨西哥煎玉米卷里真是美味极了。
They are delicious stir fried with good oil, garlic and red pepper and served in a taco.
经过：他用加热的方法提纯葡萄酒以便运输，打算到达目的地后再兑水还原。
What Happened: He used heat to concentrate wine in order to make it easier to transport, with the idea of adding water to reconstitute it when he arrived.
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