文中着重介绍了国外现行管道绝缘连接的几种标准形式，及对其绝缘性能的检测。
The paper basically introduces the several standard forms of present pipeline insulation connecting technology in foreign countries and some monitoring methods of insulation property.
他买了一个带有数字控制泵的新水锅炉，并在管道周围包裹了绝缘材料。
He bought a new water boiler with a digitally controlled pump, and wrapped insulation around the pipes.
在北美，PVC的主要用途按重要性排列为管道、建筑材料、消费产品、包装纸和电器产品(比如电线和电缆绝缘)。
The principal USES of PVC in North America, in order of importance, are pipes, construction materials, consumer goods, packaging, and electrical products (such as wire and cable insulation).
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