以下为句子列表：
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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