以下为句子列表：
英文: And the result of the finite element analysis provides a reference for the parametric optimization of downhole cable heating technology.
中文: 通过数值模拟，可以定量地说明电参数对加热效果的影响，为稠油井井下电缆伴热技术中优化加热参数提供指导。
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英文: Because the natural gas countains some corrosion media such as H2S, CO2 and H2O, the downhole tubing is often severely corroded.
中文: 摘要由于天然气中含有H2S、CO2、水等腐蚀性介质，井下油管会发生严重的腐蚀破坏。
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英文: In the structure of downhole assembly for steering well drilling, the selection of tool stabilizer, upper stabilizer and calculated outside diameters, the selection of screw bending angle have influence on the side force of azimuthal increase and decrease
中文: 摘要在导向钻井钻具组合结构中，本体稳定器、上稳定器的选用与计算外径，以及螺杆弯角的选用，对用全力增、减方位时的侧向力有影响，可用来评价导向钻井钻具造料特性，分析和设计导向钻具组合。
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英文: The article summarizes experience and some problems and counter measures in the process of cool phosphate treatment used for the explosion prevention and isolation surfaces of downhole electric equipment in mines.
中文: 摘要通过对井下防爆电气隔爆面冷磷化处理工艺应用的经验总结，提出了冷磷化处理过程应注意的问题及解决办法。
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英文: Real water injection rate in water injection well will change when system pressure fluctuates or formation water absorption capacity changes. It is a disadvantage to needle vavle and downhole fixed water noddle.
中文: 注水井实际注水量随系统压力波动或地层吸水能力的变化而改变 ,这是针型阀或井下固定水嘴无法避免的缺陷。
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