加入镍和铜，钢的淬透性提高，硬度增加；
The addition of Nickel and Copper improves the hardenability and the baldness.
硬段含量提高，胶膜硬度增加，拉伸强度增加，胶膜耐水性降低。
An increase of the content of hard segmer will increase film hardness and elongation strength, and lower water resistance.
大动脉扩张性降低表明动脉硬度增加，易出现各种心血管病并发症。
The lower distensibility of large arteries is related to increasing arterial stiffness, and these patients may be prone to get more cardiovascular complications.
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