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In view of the strength of materials, the operating condition and main failure mode of oil field equipment are analysed in this paper.
本文从材料强度的观点，分析了石油矿场机械的服役条件和主要失效类型。
In this paper, the composition of the equipment, the operating principle, the technical characteristic and the field application of the mechanical sand bailing technology are introduced.
文中主要阐述了机械捞砂工艺的结构装置、工作原理、技术特点及现场应用。
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