hard material

Adopting the method of the solid-liquid composite casting, the new type anti-impact and anti-wear hammer head, in witch the soft material and hard material are alternately arranged, were made.

采用固-液复合铸造的方法，制造出一种软硬材料相间、抗冲击及耐磨性能高的复合锤头。

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In this dissertation, resorting to the model of thrust ball bearing, the effect of material characteristic on the distribution of rolling contact stress field about super hard material are simulated by utilizing commercialized software ANSYS.

本文应用大型有限元通用软件ANSYS作为分析工具，以推力球轴承为模型，借助于数值模拟技术研究了超硬涂层材料滚动接触行为，分析了材料特性对轴承滚动接触应力场的影响。

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The furniture should be of smooth, hard material not liable to warp or corrode.

家具应使用光滑 、 坚硬、不易变形和腐蚀的材料制作.

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In the 12 th dynasty, amethyst was used for the first time ( a very hard material ).

在第12个王朝内, 第一次使用紫水晶 ( 一种很坚硬的材料 ).

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