... 冷轧竹节钢筋 cold rolled ri ed steel bar; cold rolled ribbed steel bar 三圆柱模滚轧螺纹法 three-cylindrical die thread rolling; three-cylindrical-die thread rolling; three-cylindrical-diethreadrolling 旋转螺纹钢板盘 rotary screwing chuck ...
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three-cylindrical-die thread rolling 三圆柱模滚轧螺纹法
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