small bore heating system是什么意思

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The paper summarizes progress of fuel gas transmission, distribution and application in past 10 years, which include: building regulation boxes, fuel gas transmission and distribution remote measurement and control systems, fuel gas leak alarm systems, separated household fuel gas heating, and fuel gas directly fired heat supply and refrigerating system.

综述了近 10年来燃气输配和应用方面的进展 ,包括 :楼栋调压箱、燃气输配远程遥测控制系统、燃气泄漏报警系统、燃气分户采暖和燃气直燃供热供冷系

The research of stress intensification factor for large diameter piping system was carried out in this paper.

对大直径管道系统的应力增强系数SIF进行了研究,利用有限元方法计算了大直径管道标准三通,并将ASME B31规范的计算结果与FE/PIPE的结果进行了比较。