以下为句子列表：
英文: Based on the crystal structure of astrophyllite, we examined the infrared spectra of monoclinic and triclinic astrophyllites, contrast the infrared spectral features of both astrophyllite minerals, and discuss the assignments of infrared absorption freque
中文: 在新测定的星叶石晶体结构资料的基础上,对星叶石矿物进行了详细的红外光谱研究,对比了单斜及三斜星叶石的红外光谱特征,并对星叶石中红外吸收振动频率的归属问题进行了讨论。
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英文: Experiments show the optimum content of pyrophyllite and dolomite is 30%; in contrast to original bond, the refractory point of bond is reduced by 55℃, the average coefficient of thermal expansion is reduced by 30% and flexural strength and shock strength
中文: 通过实验发现：叶蜡石和白云石最佳含量为30%，与原结合剂相比，结合剂耐火度降低了55℃，平均热膨胀系数降低了30%，磨具抗折强度提高了27%，磨具抗冲击强度提高了22%。
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英文: The studies indicate that different content of pyrophyllite and dolomite can cause the following three cases: (1) making the refractory point decrease linearly and, to some extent, influencing the microstructure and properties of sintered body; (2) accele
中文: 同时，也不同程度地影响了磨具烧结体的微观结构和性能；(2)可促进在烧结过程中莫来石的形成，降低结合剂的热膨胀系数，加强了结合剂与磨料的匹配性，提高了磨具的抗折强度和抗冲击强度；(3)在一定温度范围内还可防止碳化硅磨具出现黑心现象，拓宽了碳化硅磨具的烧结温度适应范围。
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