They do some investigation and find two pieces of broken pipe.
他们做一些调查和发现坏掉的管二块。
Through the deep investigation and analysis of the drilling pipe failure, the main factors causing drilling pipe failure are found out.
通过对钻杆失效问题的深入调查和分析，找出引起钻杆失效的主要原因。
This paper sets up a simplified physical model for viscoelastic pipe, on which a investigation on energy dissipation mechanism of it is presented and some new conclusions are given.
建立了挠性胶管阻尼耗能的简化模型。以此为基础分析了挠性胶管的阻尼耗能的一般规律，并得出了一些新的结论。
Based on design experience and results of investigation, discusses some questions about heating modes for residential quarters, piping installation and insulation and pipe network lay out.
结合工程设计经验和实地调研，探讨了住宅小区供暖供热中的系统形式、管道安装、保温、外网敷设、热电联产与集中锅炉房供热经济比较等问题。
Mechanism and types of soil corrosion on buried steel pipe are introduced, and methods of soil corrosion evaluation of site investigation and analysis in laboratory are discussed.
介绍了土壤对地下钢管腐蚀的机理与类型，讨论了土壤腐蚀现场勘测与实验室分析的评价方法。
This paper presents an investigation on the condition of drill pipe wash out occurred in 2004 in one oil field, and statistic analysis on the different type of drill pipe wash out were carried out.
对某油田2004年钻杆刺穿情况进行了调查研究，得到钻杆内加厚过渡带部位刺穿是钻杆刺穿失效的主要形式。
An experimental investigation showed that compared with a general external fins pipe, the new way can reduce the drag more than 40% and enhance the heat transfer about 10% meanwhile.
单管的实验研究证实，选用合理的绊条扰流结构，可使环翅管的绕流阻力降低40％，换热增强10％。
The fractal theory provided a new way for investigating the adherence of spray-enameled pipe, and founded further investigation base for the adherence of enamel coating.
分形理论为研究喷瓷管道的密着性提供了一种新的方法，为深入研究瓷层的密着性奠定了基础。
The fractal theory provided a new way for investigating the adherence of spray-enameled pipe, and founded further investigation base for the adherence of enamel coating.
分形理论为研究喷瓷管道的密着性提供了一种新的方法，为深入研究瓷层的密着性奠定了基础。
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