以下为句子列表：
英文: As a kind of cement retarder, normal setting time and good effect for mechanical properties and soundness of cement can be got when adding desulfurization gypsum in cement, so it can used instead of natural gypsum to produce cement entirely, coal gangue i
中文: 脱硫石膏作水泥缓凝剂时，水泥的安定性、凝结时间正常，可改善水泥的力学性能，完全可替代天然石膏；活化后的煤矸石和脱硫煤灰具有较好的活性，用作水泥混合材可增加水泥产量、降低生产成本，具有良好的经济和环境效益。
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英文: Based on the selection of the accelerating agents for the wet shotcrete, the applicability of the setting time for the accelerating agents got from the tests concerned are discussed herein, from which a proposal is put forward that the alkali-free acceler
中文: 摘要根据湿喷混凝土速凝剂品种选择试验结果，讨论了速凝剂凝结时间试验结果的适用性，开提出了永久工程湿喷混凝土应优先选用无碱速凝剂的建议。
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英文: Quick: Don't need to weld and galvanize, the setting time is 3 times quicker than the flange connect fitting.
中文: 快速不需焊接和再镀锌，安装速度比法兰连接管件快3倍以上。
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英文: The result shows that blended cement mixed with activatory coal gangue powder has high compressive strength, however, with the increase of the admixture of coal gangue powder, flowability of blended cement paste become worse, and the setting time is not o
中文: 结果表明，掺入经活化处理的煤矸石粉配制的混合水泥具有较好的强度性能；随掺量增加，水泥浆体的流变性能变差，但对凝结时间并无明显影响。
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英文: The Effect of Different Diameters Powder on Setting Time and Compressive Stress of Carbonated Hydroxyapatite Cement
中文: 粉体粒径对碳酸化羟基磷灰石水泥固化时间和压缩强度的影响
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