6×7+IWS双螺旋钢丝曲率和挠率及其应力变化特性
6×7+IWS쌍라선강사곡솔화뇨솔급기응력변화특성
VARIATIONS OF CURVATURE, TORSION AND STRESS OF DOUBLE HELIX WIRE IN 6×7+IWS WIRE ROPE
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