研制出了抗冲击韧性水泥外加剂。
We research and manufacture impact toughness cement additive.
结果表明，改性聚甲醛的分子量得到了较好的保持，抗冲击韧性及断裂伸长率均明显优于未改性聚甲醛。
The result showed the molecular weight of modified POM were kept well, which leaded higher impact strengh and elongation at break than pure POM.
结果表明，变质处理后钨合金白口铸铁的微观组织中碳化物网络断裂，其抗冲击韧性和耐磨损性能显著提高。
The results show that the carbide networks in microstructure tend to break, and fracture toughness and wear-resisting properties of the alloy were improved.
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