File:Bi-metal中經社.jpg
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中文（简体）：為了達到目的，多重螺旋槽麻花鑽本發明是由一個長笛，其小腿被箝位和擔保的工具持有鑽井機;包含多個螺旋，四是首選，長笛槽;長笛送走外設，笛子槽，一個切割部分形成一個前端，笛子，一種激勵，在那裡形成切割部分和長笛相互交叉和導螺桿錐形和螺紋是在處置中心在前面的長笛。
在實踐中，增加強度切削部分的刺激與長笛結合槽，笛土地的整體升級，結構強度的演習。 English: Bi metal Lip and spur drill bits |
| Source | Own work |
| Author | Kingdrill |
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I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 07:19, 30 March 2010 | | 1,280 × 960 (309 KB) | Kingdrill (talk | contribs) | To achieve the purpose, a MULTIPLE SPIRAL GROOVE TWIST DRILL of the present invention is comprised of a flute, whose shank is clamped and secured to a tooling holder of a drilling machine; containing multiple spiral, and four is preferred, flute grooves; |
| 07:18, 30 March 2010 |  | 1,299 × 1,813 (193 KB) | Kingdrill (talk | contribs) | {{Information |Description={{en|1=為了達到目的，多重螺旋槽麻花鑽本發明是由一個長笛，其小腿被箝位和擔保的工具持有鑽井機;包含多個螺旋，四是首選，長笛槽;長笛送走外設，笛子槽，一個切割部 |
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