u-pipe u型管
u-pipe heat exchanger u型管埋地换热器
Construction drainage PVC-U pipe u管 ; 建造排水PVC ; 建筑排水用PVC ; U管材
U-pipe pile heat exchanger U型管桩埋换热器
u-pipe u 形管
u-pipe underground u型垂直埋管
U-pipe vertical heat exchanger U型竖埋管换热器
The results showed that PVC-U pipe can fully meet the requirements of wastewater treatment and reduce the construction costs greatly.
结果表明：PVC-U管材完全满足污水处理的要求，并可降低工程造价。
In this article, USES of new additives in PVC-U pipe and USES of new special pipe material in polyolefin pipe and some new pipe materials were discussed.
本文从不同的管道材质的角度主要阐述了新型助剂在PV C - U管道中的应用、新型管道专用料在聚烯烃管道中的应用及一些新型塑料管道的材料。
The formulation design, technical process and technical control of the procedures in the production of fishery float by use of PVC-U pipe wastes are introduced.
介绍以PV C - U管材洗机料生产渔用浮标的配方设计、工艺流程及各工序的工艺控制。
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