Locale application indicates that it has high drilling speed,longer drilling life and lower cost,and it can be better to meet the demand of exploration engineering.

　
英 美
  • 現場(chǎng)應用情況表明,該種鉆頭具有高時(shí)效、壽命較長(cháng)、成本較低的優(yōu)點(diǎn),能更好的適應勘探工程的需要。
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