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石油勘探开发仪器基本环境试验 总则
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优质钢制对焊管件规范
Specification for high test wrought butt welding fittings
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石油工业成套机电设备出口合同规范
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合成纤维厂采暖通风与空气调节设计规范
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套管钳扭矩仪校准方法
The calibration method for torque gauge of casing tong
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井径仪校准方法
The calibration method of caliper
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