塑料管道系统 meaning in Chinese

plastic duct system

Plastics pipes and fittings - determination of opacity
塑料管道系统.不透明性测定
Plastics piping system components and related materials
塑料管道系统配件和相关材料
Plastic piping systems for water supply - polyethylene - pipes
供水用塑料管道系统.聚乙烯.管道
Plastic piping systems for water supply - polyethylene - valves
供水用塑料管道系统.聚乙烯.阀门
Plastic piping systems for water supply - polyethylene - general
供水用塑料管道系统.聚乙烯.总则

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