以下为句子列表：
英文: A good forest structure could improve the even degree and range of distribution obviously, and improve the porosity; ② the fractal dimension (FD) and mean weight diameter (MWD) could sign the soil structure feature objectively.
中文: 良好的林分结构能明显提高土壤粒径的分布均匀程度与範围，改善土壤孔隙状况；②分形维数和重量平均直径能比较客观地表徵土壤结构特徵，是较为理想的土壤结构测定指标。
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英文: A mixture of decaying organic matter, as from leaves and manure, used to improve soil structure and provide nutrients.
中文: 堆肥腐烂有机体的混合物，如树叶或粪便，用来改善土壤结构并增加土壤养分
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英文: In this paper a new kind of constitutive model capable to describe the damage of soil structure has been proposed.
中文: 提出了一种新型的堆砌体模型，用以描述这种结构破坏现象。
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英文: Results showed that by using straw and plastic film dual mulch in dry-cultivation of rice planting, both of the range of temperature difference and the loss of water in dry-cultivated field of rice were decreased, the soil structure was improved, the soil
中文: 水稻秸秆+地膜二元覆盖旱作栽培效应的研究结果表明，秸秆+地膜二元覆盖旱作稻田土壤变温幅度降低，水分散失减少，结构改善，养分积累增加；水稻无效分蘖减少，生育转变提前，灌浆结实期延长，穗大粒多，千粒重高，增产效果显著。
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英文: Soil structure is brown loam over red/yellow clay with underlying shale.
中文: 土壤结构为咖啡色壤土覆盖红/黄黏土，基底为页岩。
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