two start screw ; double-thread screw
... double thread screw 双头螺纹; 双纹螺丝 double-thread screw 双纹螺纹螺钉 ecial screw thread gauge 特种螺纹量规 ...
基于2个网页-相关网页
... 单纹螺纹螺钉 single-threaded screw 双纹螺纹螺钉 double-thread screw; two start screw 槽纹螺旋, 螺槽 flute spiral ...
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