...敷设长度.米制系列 英文名称： Unplasticized polyvinyl chloride (PVC) fittings with plain sockets for pipes under pressure -- Laying lengths -- Metric series 标准组织： 【ISO】国际标准化组织标准 正文语种： 英法双语 国标分类： 【Q22】建筑用塑料复合材料 ...
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模型由管内蒸汽温降方程、不同敷设方式蒸汽管道的单位长度散热损失方程、总传热热阻计算方程组成。
The model was made up of inner steam temperature drop equations, the steam pipe laying different ways of unit length heat loss equations, total heat resistance calculation equations.
该电热带在现场能按实际需要长度任意剪切，并具有柔软性，可以紧贴管道表面敷设。
The electric heating belt can be cut flexibly according to the actual needs. And it is flexible and can be installed closely on the pipe surface.
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