dwv meaning in Chinese

共挤制复合排水、排污
铜排水管

Cast copper alloy solder joint drainage fittings - dwv
Dwv铸铜合金钎焊连接排水配件
Cast copper alloy solder joint drainage fittings : dwv
Dwv类铸铜合金钎焊连接排水管件
Dwv specification for coextruded composite drain , waste , and vent pipe
共挤制复合排水排污排气管
Cast copper alloy solder joint drainage fittings - dwv ; errata
铸铜合金软钎焊连接排水管件. dwv .勘误
Dwv standard specification for coextruded composite drain , waste , and vent pipe
共挤制复合排水排污通风管

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