When heated, baking soda undergoes a chemical reaction that gives off carbon dioxide, which makes it useful in extinguishing small grease or electrical fires.
当在高温下，苏打的化学反应产生的二氧化碳气泡会消灭少量的油脂和电火苗。
The effects of sulfuric acid concentration, immersing time and the temperature and time of baking on catalytic activity and the reaction time on esterification were studied.
考察了硫酸浓度、浸渍时间、焙烧温度、焙烧时间对催化剂活性和反应时间对酯化反应的影响。
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