✦ LIBER ✦
Calculation of principal geometric parameters for multithread helicoidal rotor mechanism of screw-type downhole motor
✍ Scribed by Yu. A. Korotaev; A. V. Tsepkov; A. M. Kochnev
- Publisher
- Springer
- Year
- 1989
- Tongue
- English
- Weight
- 231 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0009-2355
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