Diameter Changeable Roller Bit and Its Application in Road and Bridge Project
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赵华.可变径滚轮钻头及其在路桥桩基工程中的应用[J].钻探工程,2005,32(6):44-45.ZHAO Hua. Diameter Changeable Roller Bit and Its Application in Road and Bridge Project[J]. Drilling Engineering, 2005,32(6):44-45.
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- 收稿日期:2004-12-06
- 最后修改日期:2004-12-06
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