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1 ?商品管 ... commercial ore 工业矿石 commercial pipes 商品管 commercial seam 可采煤层 ...
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Plumbers install, repair and maintain pipes, fixtures and other plumbing equipment used for water distribution and waste water disposal in residential, commercial and industrial buildings. 管道工安装，维修和保养管道，装置和用于住宅，商业和工业建筑的配水和废水处理等水暖器材。 - 2
Zebra mussels colonize on various surfaces, such as docks, boat hulls, commercial fishing nets, water intake pipes and valves, native mollusks and other zebra mussels. 斑 马贻贝依附在各种表面上，诸如码头，船壳，商用鱼网，吸水管和阀门，本地软体动物和其他斑马贻贝。 - 3
Steam-Flo generators are often used in commercial greenhouses, nurseries and industrial applications including heating steam jackets, and thawing pipes and valves. 我们生产的发生器常用于温室、培育室和工业应用，包括热蒸汽套管，以及溶解管和阀。
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