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發(fā)布時間: 2014-3-3 14:06
正文摘要:皮托管的構(gòu)造如圖,頭部為半球形,后為一雙層套管。測速時頭部對準(zhǔn)來流,頭部中心處小孔(總壓孔)感受來流總壓p0,經(jīng)內(nèi)管傳送至壓力計(jì)。 頭部后約3~8D處的外套管壁上均勻地開有一排孔(靜壓孔),感受來 ... |
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