The invention relates to an alternative scheme for replacing a U-shaped copper pipe with a solar U-shaped aluminum pipe. The alternative scheme comprises a U-shaped copper pipe, a spiral copper pipe or spiral stainless steel pipe, an inlet copper pipe, an outlet copper pipe, a connecting ...
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摘要: Discusses the replacement of defective electric fuel pump in automobiles. Significance of checking the automobile's spark-plug; Advise on fuel pressure. INSET: How It Works: Fuel Pumps.年份: 2000 收藏 引用 批量引用 报错 分享 全部来源 求助全文 ProQuest EBSCO ...
A water-filled copper pipe is laid round the latter, which can be mounted in the lower part of the chimney.HAPPEL,FRANZ
that the quality of the surface of the pipe blank is ensured, molten aluminum in the copper-aluminum crystallizer is rapidly cooled by using coolant water, and is relatively low in crystallization, and thus grain size of a crystal structure of the cast thin-walled aluminum pipe blank is ...
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