CNS 7595-1981 Quality Specification for Cold Coiled Helical Tension Spring Made of Round Wire《冷卷成形拉力螺旋弹簧之品质（由圆金属线制造）》.pdf

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JIS H7104-2002 形状记忆合金螺旋弹簧的恒温负荷试验方法 .pdf

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