A simple two-layer analytical model was developed to describe the process of dissolved chemical loss in surface runoff from the beginning of runoff occurrence.

本文根据地表径流中溶质流失的流动特征和物理规律，基于矢量合成概念，建立了二层解析模型，描述从降雨开始径流使水溶质在地表的流失过程。

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Novozymes stock pared its loss earlier this year after DuPont co., the third-largest U.S. chemical company, said it planned to build a pilot plant with Danisco to make second - generation biofuel.

诺维信股票减少今年早期的损失，是在杜邦公司，美国第三大化学公司，声称计划将和丹尼·斯克一起建立一个试验工厂，用来制造第二代生物燃料之后。

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Memory loss caused by Alzheimer's Disease could be reversed after scientists discovered that a chemical naturally produced by the body to fight arthritis also works on the brain condition.

科学家们发现人体自然产生的一种对抗关节炎的化学产物在大脑环境中也可起作用使得阿尔茨海默氏症引起的记忆力丧失有望恢复。

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It results from a loss of cells in the brain that produce a chemical messenger called dopamine, which coordinates movement.

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Unlike the multinational chemical and junk food manufactures who oppose PROP 37 because they fear loss of profits from the rejection of their never proven safe GMOs, we have nothing to financially gain or loose by the outcome of PROP 37.

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Dopamine is involved in sensations of reward, making us feel intense desire that can lead to feelings of euphoria, insomnia, and loss of appetite, and it is only one actor in the great chemical ballet happening in our bodies.

CNN: The science of kissing