Kinetic models of cell growth, L-lactic acid formation and glucose consumption in L-lactic acid batch fermentation are proposed and kinetic model parameters are determined.

建立了L -乳酸间歇发酵菌体生长、产物生成和底物消耗的动力学模型，确定了模型参数。

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Then discuss the acid formation from the soil quality, atmosphere grain, NH 3 and weather forms, point out these natural factor's difference is the most important cause of acid rain formation.

接着从土壤性质、氨气、大气颗粒物和天气形式等自然因素方面探讨了中国酸雨现状的形成原因，指出南北方这些自然因素的差异是酸雨现状形成的最重要原因。

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Unfortunately, these black smokers are very acid, which prevents amino-acid stabilization, and thus the formation of organic molecules.

但是因为上述黑烟囱都呈酸性，因此不利于氨基酸的稳定与有机分子的形成。

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To their surprise, they discovered that the seed-formation rates for sulphuric acid and ammonia are between a tenth and a thousandth of those needed to account for the cloud seeding actually seen in the atmosphere.

ECONOMIST: Climate science (II)

This mutation causes a change in one of the amino acid molecules that makes up an important enzyme for proper bone growth and formation.

MSN: Cause of rare and fatal dog skeletal disease pinpointed