The active mechanism of the activators is discussed according to the pictures of scanning electron microscopy of slurry of fly ash and cement.
根据粉煤灰-水泥浆体的扫描电子显微镜图像，探讨了粉煤灰活性激发剂的激发机理。
Conclusion: the values of fatigue strength and bending strength of the bone cement were improved by vacuum mixing. The method of vacuum mixing has an active significance in clinic.
结论：采用真空搅拌骨水泥的方法，提高了国产骨水泥的抗疲劳强度及静态抗弯曲强度，在临床应用有较大的积极意义。
This thesis explains the results of a series of tests done to explore the feasibility of using the Tuff excavated in Jiudian as active admixture in Cement industry.
本文阐明了九店凝灰岩用作水泥工业活性混合材料的可行性。
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