The ageing impact toughness of the medium plate can be increased by controlling carbon and sulfur content and improving titanium content and the purity of the molten steel.
建议通过严格控制碳硫含量，提高钛含量和钢水纯净度，以提高钢板的时效冲击韧性。
We introduced a structure equation with macroscopic parameters, which can explain both the yield point phenomenon and strain-ageing of low carbon steels.
我们提出一种新的来自于宏观量构成的理论，将低碳钢的屈服及时效现象统一于同一个理论之下。
Two kinds of light-shield agents of ZnO and carbon black were used to improve the ageing-resistance of polyacetal(POM).
采用炭黑和氧化锌两种光屏蔽剂对共聚甲醛进行耐老化改性。
The results show: alloying elements carbon, nitrogen, manganese, tungsten, chromium, nickel, vanadium contribute to the wear-resistance. The effect of ageing is prominent.
结果表明，合金元素碳、氮、锰、钛、铬、镍、钒对耐磨性都有贡献，时效处理更显良好效果。
The results show: alloying elements carbon, nitrogen, manganese, tungsten, chromium, nickel, vanadium contribute to the wear-resistance. The effect of ageing is prominent.
结果表明，合金元素碳、氮、锰、钛、铬、镍、钒对耐磨性都有贡献，时效处理更显良好效果。
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