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- C90级油井管钢C90 Oil-Well Tube Steel
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- 电导法测定G级油井水泥水化速度HYDRATION RATE OF CLASS G OIL-WELL CEMENT MEASURED BY ELECTRICAL CONDUCTANCE
- 连铸20管钢的铸坯质量QUALITY OF CONTINUOUSLY CAST BILLETS OF 20 PIPE STEEL
- 新型干法窑生产A级油井水泥的体会Experience of production of A grade oil well cement by PC kiln
- 钢厂steelworks
- 品管QA
- 高管senior executive
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- 排气管vent-pipe
- 钢的steel
- 大学英语四级College English Band 4
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- 钢带metal strip
- 船级ship' classification