whirl wind cutting thread 旋风切削螺纹
thread cutting 螺纹加工装置
THREAD CUTTING SCREWS 自削螺丝 ; 开槽切削螺纹螺钉 ; 自削螺钉
screw thread cutting 螺纹切削法
STAINLESS STEEL THREAD CUTTING SCREWS 不锈钢自削螺丝 ; 不锈钢自削螺钉
Cutting the thread 切断话题 ; 切断连线
cutting thread shear 螺纹剪切
thread cutting lathe 螺丝车床 ; [机] 螺纹车床
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