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供应QZr0.4 QCr1 QCr0.5 QCr0.5-0.2-0.1 QCr0.6-0.4-0.05 QCd1铜合金的化学成分QZr0.4 QCr1 QCr0.5 QCr0.5-0.2-0.1 QCr0.6-0.4-0.05 QCd1铜合金的力学性能QZr0.4 QCr1 QCr0.5 QCr0.5-0.2-0.1 QCr0.6-0.4-0.05 QCd1铜合金的抗拉强度QZr0.4 QCr1 QCr0.5 QCr0.5-0.2-0.1 QCr0.6-0.4-0.05 QCd1铜合金的屈服强度QZr0.4 QCr1 QCr0.5 QCr0.5-0.2-0.1 QCr0.6-0.4-0.05 QCd1铜合金的硬度QZr0.4 QCr1 QCr0.5 QCr0.5-0.2-0.1 QCr0.6-0.4-0.05 QCd1铜合金的伸长率