Finer grinding in a proper way will reduce the setting time of concrete made by shaft kiln cement containing F. However, it is impossible to...
适当细磨可以缩短含氟立窑水泥配制混凝土的凝结时间，但无法消除立窑水泥配制混凝土凝结时间偏长的缺点。
Yet the task will be much tougher than five years ago: instead of setting goals, this time leaders must agree on concrete decisions to achieve them.
不过与五年前相比，任务将更加艰巨，这次领导人不是制订目标，而是为实现这些目标商定具体的决策。
Yet the task will be much tougher than five years ag instead of setting goals, this time leaders must agree on concrete decisions to achieve them.
不过与五年前相比，任务将更加艰巨，这次领导人不是制订目标，而是为实现这些目标商定具体的决策。
However, the setting and hardening time of the concrete, the mortar influences the test results obviously.
混凝土﹑水泥砂浆﹑环氧树脂砂浆的凝结硬化时间长短对测试结果有比较显著的影响。
The effects of five common set-retarders on setting time of cement paste and concrete and strength of concrete are studied.
论文分别研究了木钙、糖钙、酒石酸、焦磷酸钠和蔗糖共五种常用缓凝剂对水泥净浆凝结时间、混凝土凝结时间及强度的影响。
Cutting and interlocking between the primary and secondary secant piles are realized ingeniously with the method of delaying concrete setting-time.
利用延缓砼凝固时间的方法，巧妙地实现了相邻桩间的切割咬合。
It is shown that the limestone powder with appropriate particle distribution can improve the fluidity of concrete, reduce bleeding rate and shorten the setting time.
试验结果表明：一定颗粒分布的石灰石粉能改善新拌混凝土的流动性能，减少泌水率及缩短凝结时间。
It is shown that the limestone powder with appropriate particle distribution can improve the fluidity of concrete, reduce bleeding rate and shorten the setting time.
试验结果表明：一定颗粒分布的石灰石粉能改善新拌混凝土的流动性能，减少泌水率及缩短凝结时间。
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