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277 resultados para 187-1157

模拟酸雨对红壤铝形态的影响

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我国东部七省（闽、浙、赣、湘、鄂、苏、皖）生态系统对酸沉降的临界负荷的

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烤烟烟叶卷曲症状的诊断及其机理研究 Ⅲ．施用商品有机肥、磷酸盐和硫酸盐诱导缺钙症状的土培试验

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Carbon nanospheres produced in an arc-discharge process

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Effective synthesis of propylene carbonate from propylene glycol and carbon dioxide by alkali carbonates

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Novel reaction route for dimethyl carbonate synthesis from CO2 and methanol

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超声处理条件对水煤浆浆体各性质的影响

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Promoting Effect of SO2 on Activated Carbon-Supported Vanadia Catalyst for NO Reduction by NH3 at Low Temperatures

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双射流流化床空隙率的分布

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Catalytic Performance of CuCr/CH3ONa used for Low Temperature Methanol Synthesis in Slurry Phase

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Synthesis of Mesoporous MCM-41 Molecular Sieves using EDA and HMDA as Catalysts

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煤与催化裂化油浆共处理反应沥青性质分析

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Direct liquefaction of sawdust under syngas with and without catalyst

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Coal to Liquid (CTL): Commercialization Prospects in China

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Ground-state properties of Z=59 nuclei in the relativistic mean-field theory

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