http://www.yi-chang.net/cn/information-11c.html
攻牙前使用鑽頭之孔徑對照表，點圖片變大
絲攻柄徑四方頭尺寸表，點圖片變大
鑽孔轉速建議表，點圖片變大
高速鋼鑽頭鑽孔的進給量表，點圖片變大
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生活，求學，興趣
生活，求學，興趣
About Me
- Jen Chen
- 世人不解釣魚何? 我輩答曰心情愉! 探索其中奧妙處~ 唯有參與知其樂! People unknown why to fish? I say good mood! Want to understand what happen~ Only join in it~
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