It shows that the modified overall calculation method is more scientific and rational and exact on mix ratio design of self-compacting concrete.

结果表明：改进的全计算法是一种科学、合理、准确的自密实混凝土配合比设计方法。

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The results show that the modified overall calculation method is a more scientific, rational and exact method for mix design of self-compacting concrete.

结果表明：改进的全计算法是一种科学、合理、准确的自密实混凝土配合比设计方法。

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Based on the said calculation and related analysis, process parameter optimization is done to expand product mix in terms of size range and variety.

通过计算分析，在现有顶管机的基础上进行工艺参数优化，可扩大机组生产的产品规格和品种。

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This strategy stems from a mix of political calculation (the desire to reassure voters who have long thought the Tories hostile to the popular NHS) and Mr Cameron's own fervent support of the health service, for reasons both personal and intellectual.

ECONOMIST: David Cameron did not start as he means to go on