1、 Understanding of the manufacture of sulfuric acid in two ways, contact the Law and nitrification.
了解制造硫酸的两种方法, 接触法和硝化法.
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2、 The nitrogen fertilizer losses in paddy field involve nitrification - denitrification, ammonia volatilization nitrate leaching and runoff.
稻田中氮素损失途径主要有氨挥发、硝化 - 反硝化 、 淋洗和径流,其中氨挥发是氮素损失的主要途径.
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