- drilling tech-economic index
- 钻井: borehole; well drilling
- 技术经济: technical economy
- 指标: target; quota; norm; index; ...
- 技术经济指标: executive summary; technical -economic index; technical and economic indicators; technical and economic target; technical economical index; technical economical indices; technological and economic indicators
- 石油钻井技术经济: drilling technical economics
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