什么叫隧洞的内水压力？分别写出圆形隧洞所受的均匀内水压力强度和非均匀内水压力强度的计算公式与分布图形。
内水压力——指作用在衬砌内壁上的水压力
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We_______ifyoucouldgiveuswhateverinformationyoucaninthisrespect.
Thenewlawsthreatentodeprivemanypeople_______themostelementaryfreedoms.
Thisofferis____yourreplyreachingusbeforeMay5th.
Ifwehadbeeninformedintime,we____themforyou.
WhichofthefolloingisNOTincludedinthefabledFiveMountainsinChina?
