There is no appropriate model to analyze settlement of landfills so far, especially when bio-chemical decomposition was taken into consideration.

迄今为止还没有分析填埋场沉降的合理模型，特别是关于生物降解引起的固体颗粒的减少。

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Critics, however, suggested that the magnetite was formed by a chemical process called thermal decomposition.

但批评人士认为，这枚陨星是在热分解的化学过程中形成的。

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Chemical change, especially decomposition, produced electrolyte by an electric current.

电解质是指电流在分解时所产生的化学变化。

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Traces of alcohol and a chemical matching the party drug GHB were found, but both can occur naturally as part of the decomposition process, she said.

CNN: STORY HIGHLIGHTS