文章结合工程实例，阐述无负压供水技术的应用。
The article explains the applications of no-negative water supply technique, based on the actuality of engineering.
文章结合工程实例介绍了长螺旋钻孔压灌砼桩的施工技术，以供同行参考。
The article introduces the construction technique of long-screw drill grouting piles, based on the engineering actuality, for the reference of similar projects.
文章结合工程实例，介绍坐标互换公式在工程施工中的应用及应注意的问题。
Based on the actual engineering practice, the article introduces the application of coordinate interchanging formula in engineering construction and relevant precautions.
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