Pic Title: 常见螺丝规格与标示 Related Phrase: Common screw specifications and labeling Related pictures: 常见螺丝规格与标示 Source: http://itrs821.idv.tw/ Pic Description: 　　wiki] Common screw specifications Introduction | Basics Nicky Scott muttering screws Translated by Google No. / 5 Picture               Slide Show

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