The displacement efficiency was raised through optimizing slurry system, selecting suitable cement additives and adjusting reasonably slurry rheological property.
同时优选水泥浆体系，选择合适的水泥外加剂，合理调整水泥浆流变性，提高了顶替效率。
Objective:To summarize and evaluate the efficiency of treatment of giant cell tumor of bone with hyperthermia inactivation and packing with osseous granula and cement.
目的：总结和评价高温灭活、骨粒骨水泥填充骨缺损治疗骨巨细胞瘤的疗效。
It is key problem that ignition experiment of coal are studied to improve the moving condition and combust efficiency of the cement precalciner.
针对水泥分解炉进行系统的煤粉着火实验研究，是提高分解炉燃烧效率，改善运行工况至关重要的问题。
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