结论ACS患者动脉僵硬度增高，收缩压、脉压与大动脉僵硬度密切相关。
ConclusionArterial stiffness is significantly increased in patients with ACS, and SBP and PP are closely related to arterial stiffness.
但磨球材质硬度越高，衬板材质耐磨性趋向于增高。
The wear-resistance, however, tends to increase with the hardness of grinding ball material.
在进行放电（电火花）加工后，表面硬度不会增高，可简化其后的加工工序。
Surface hardness will not be increased after the EDM process which simplifies the following machining procedures.
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