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half pipe中文是什么意思

  • 半管式滑板滑雪

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  • 例句与用法
  • Thoughts of basic slipping and flying height in the half pipe
    型场地单板雪上技巧项目基础滑行和飞起高度的思考
  • Consisting of thin base plates shaped to the shell and half pipe water channels welded on
    的安装,由适合于壳形状的薄底板和半边水管槽焊接而成。
  • The newly developed system comprises a big number of single cooling elements , each consisting of a thin base plate on one side , shaped to the shell , and water channels made of half pipes on the other side
    在每个元件的一边有一个薄的基础平板,使适合于壳的形状,另一边是由半边管做的水通道
  • ( 4 ) through the hydraulic property experiment of micro - hole lateral pipes of simple sdi in air , it was found that the average pressure of 60 mitre length lateral pipes was at the position of per 40o / o ~ ~ ~ 50 % of the effectual pipe length from the fist micro - hole , major pressure - loss was occurred at the ahead part of half pipe . the pressure uniformity reduced with orifice aperture ? increasing , and the relationship between pressure uniformity and initial water pressure was poor . running under the initial water pressure of 1 . 5 meter , the discharge uniformity reduced with orifice aperture ? increasing , and when the orifice aperture smaller than or equal 1 . 0mm , irrigation uniformity could achieve above 0 . 6
    ( 3 )通过对空气介质中简易地下滴灌的微孔毛管试验研究发现: 60m管长的毛管平均压力水头的位置基本上在距第一孔口的有效管长40 - 45的地方;大部分水头损失发生在毛管的前半部分;压力均匀度随孔径的增大而减小,但与初始工作水头关系不密切;在1 . 5m以下的工作压力下运行,沿程出流均匀度随孔径的增大而降低,当孔径不大于1 . 0mm时,灌水均匀度可以达到60以上;当孔径大于等于1 . 2mm时,灌水均匀度低于50 。
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Last modified time:Wed, 13 Aug 2025 00:29:56 GMT

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