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2
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Statistical investigation about the calculation of the drilling rate with percussive drilling. (In German.) 12F, 4T, 15R GLUCKAUF-FOSCH´HEFTE, V37, N1, 1976, P5-12.pdf
- Statistical investigation about the calculation of the drilling rate with percussive drilling. (In German.) 12F, 4T, 15R GLUCKAUF-FOSCH´HEFTE, V37, N1, 1976, P5–12
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向豆丁求助:有没有fosch?