The reasonable design age was put forward based on the intensity phase of lime-flyash soil.
依据二灰土强度增长的阶段性，提出了合理的设计龄期。
MC nylon reinforced by glass fiber and flyash was prepared based on the principle of static casting of MC nylon.
利用铸型尼龙（MC尼龙）静态浇铸的原理，通过阴离子聚合制得了玻纤、粉煤灰增强MC尼龙。
The tanning wastewater treated by a flyash -based coagulant and polysilicate aluminum (PSA)flocculant has been researched.
研究了粉煤灰制备混凝剂并与聚硅酸铝（PSA）絮凝剂配合处理制革废水。
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