Wikibooks zhwikibooks https://zh.wikibooks.org/wiki/Wikibooks:%E9%A6%96%E9%A1%B5 MediaWiki 1.46.0-wmf.24 first-letter Media Special Talk User User talk Wikibooks Wikibooks talk File File talk MediaWiki MediaWiki talk Template Template talk Help Help talk Category Category talk Transwiki Transwiki talk Wikijunior Wikijunior talk Subject Subject talk TimedText TimedText talk Module Module talk Event Event talk 4 32161 183813 183808 2026-04-16T21:43:23Z Cewbot 42738 [[User:Cewbot/log/20170915/configuration|生成議題列表：16個議題]] 183813 wikitext text/x-wiki 8ha329xgyuqla3dis87el4lmu723rew 4 32222 183818 183739 2026-04-17T11:58:24Z Alexis Jazz 55150 Updating gadget usage statistics from [[Special:GadgetUsage]] ([[phab:T121049]]) 183818 wikitext text/x-wiki en0yjirxkui3wyc8rm7wnf0ojmybuxl 12 34181 183815 183809 2026-04-17T01:47:05Z 谪仙 67956 183815 wikitext text/x-wiki 4duqbth1z82vh0glc9rmd8aa2s7aj0j 183816 183815 2026-04-17T07:02:38Z 谪仙 67956 183816 wikitext text/x-wiki ddik8ez6bhnnq8e1jgutg2x9e9kc262 183817 183816 2026-04-17T07:03:06Z 谪仙 67956 183817 wikitext text/x-wiki esr3ibqdaa9qfm9fp6rqs1d98tpovgr 0 34183 183814 2026-04-16T22:27:42Z Harpernew 68570 创建页面，内容为“本文将推导层流管道流（即 Poiseuille 流）的速度分布与流量公式。推导过程将从 Navier-Stokes 方程出发，结合圆柱坐标系与边界条件，逐步得出抛物线速度剖面及 Hagen-Poiseuille 定律。为使读者直观理解，数学推导将与物理图像相对应。 == Poiseuille 流是什么 == Image:Poiseuille_flow_profile.svg|right|frame|圆管内层流的抛物线速度剖面示意图。管壁处速度为零（无…” 183814 wikitext text/x-wiki 1hwoue0awnhvickfxrs8bnpo4jxqffa