This paper looks back to the history of the boiler flue gas and analyzes the key technique problem in the process, putting forward the measure.

对锅炉烟气治理技术的历史作以回顾，分析了治理过程中关键的技术问题，提出了解决措施。

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Literature research and experimental method were adopted to examine the model of shot-putting technique with back shift and the selection of model based on the characteristics of teaching object.

采用文献分析和实验法对背向滑步推铅球技术模式进行比较，并根据教学对象的特点对如何选择相应的技术模式进行了分析与探讨。

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The application of this technique has greatly improved the success ratio of putting back on production of gas layer in old Wells.

该项技术的成功应用，大大提高了老井气层复产的成功率。

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