其目的在于计算非标准规格api钢丝绳的最小破断拉力值。
The purpose is to calculate the minimum breaking force of nonstandard diameter steel wire rope.
从国际标准ISO 8369中最小破断拉力系数与直径的关系出发，推导出最小破断拉力与直径的关系，并绘出关系图。
The relationship between minimum breaking force and diameter is deduced from the relationship between minimum breaking force coefficient and diameter in ISO 8369, and the relation figure are drawn.
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