This paper expoundes the influence of valve well during laying out and the difference of steel globe valve and PE globe valve in technicality and economicality.

　
英 美
  • 就管網(wǎng)施工中影響較大的閥門(mén)井問(wèn)題闡述了PE球閥的使用,并將鋼制球閥及PE球閥的技術(shù)經(jīng)濟性進(jìn)行了比較。
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目錄 附錄 查詞歷史
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