METHOD FOR DETERMINING WANT OF BITS WHEN SINKING DRILLINGS UNDER INTRICATE GEOLOGICAL CONDITIONS

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作者：

PEDKO, A

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ZEITSCHRIFT FUR ANGEWANDTE GEOLOGIE | 1977年 / 23卷 / 10期

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P [天文学、地球科学];

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07 ;

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页码：533 / 535

页数：3

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