Discussed initially the mechanism of polycarboxylic water-reducer improve performance of cracking-resistance of concrete.
初步探讨了聚羧酸减水剂提高混凝土抗劈裂性能机理。
The influence of activator on strength and free linear dilatability and sulfate resistance of chemical waste gypsum - fly ash new road building material as well as action of water reducer are studied.
研究了激发剂对化工废石膏—粉煤灰新型道路建筑材料的强度和自由线膨胀率等性能的影响，以及减水剂的作用和新型道路建筑材料的抗硫酸盐侵蚀性能等。
The experiment showed that the copolymer filtrate reducer is pretty good in depressing the filtration rate, collapse prevention, reservoir protection, thermal stability and resistance salt.
试验表明，本文合成共聚物具有良好的降滤失、防塌、保护油气层性能，抗温、抗业污染能力强。
As shock resistance precision pressure meter is filled with damping liquid and supported with shock reducer, good capacity of shock resistance is obtained accordingly.
耐震精密压力表内部充灌阻尼液和配套缓冲装置，具有良好的耐震性能。
As shock resistance precision pressure meter is filled with damping liquid and supported with shock reducer, good capacity of shock resistance is obtained accordingly.
耐震精密压力表内部充灌阻尼液和配套缓冲装置，具有良好的耐震性能。
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