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1.The rebound hardness of the material is crucial for its performance.
材料的回弹硬度对其性能至关重要。
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2.The engineer used a new formula to improve the rebound hardness of the alloy.
工程师使用一种新的配方来提高合金的回弹硬度。
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3. The researcher found that the increase in rebound hardness corresponded with an increase in strength.
研究者发现回弹硬度的增加与强度的增加是相对应的。