变孔径多孔管道是微灌系统中常用的一种灌水管道。
Multiple-outlet pipe of varying orifice size has been used to pipe in micro-irrigation system very often.
结果表明，可调节的流场和边界层的厚度，可降低与多孔介质的热传递，因此可以提高在管道中。
The results show that the flow field can be adjusted and the thickness of boundary layer can be decreased with the porous medium so the heat transfer can be enhanced in the pipe.
弹性密封件。给水排水用管道连接密封件的材料要求。第3部分：硫化橡胶多孔材料。
Elastomeric seals - material requirements for joint seals used in water and drainage applications - Part 3: cellular materials of vulcanized rubber.
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