Bedane antarane Retainer Semen lan Colokan Jembatan
Drilling & Milling Best Practice: Yen kahanan kanggo nindakake operasi pengeboran utawa panggilingan (gilingan sampah), praktik sing disaranake yaiku: Gunakake tricone Bit (IADC Bit Codes 2-1, 2-2, 2-3, 2- 4, lan 3-1) - tatanan medium hard. PDC Bit ora ...
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