下庄铀矿田北西西向分布的白垩纪角闪辉绿岩构成区内基性脉岩的主体.
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There are horse shoe vortex around spur dikes and Karman vortices behind spur dikes.
发现在丁坝的上游会形成马蹄涡,在丁坝的背风面会形成卡门涡.
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Destructive tests on piping failure of sandy gravel layer of river dikes
江河大堤堤基砂砾石层管涌破坏危害性试验研究
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塔里木盆地西北缘出露的辉绿岩墙的SiO2含量为44.34%~49.34%,Na2O+K2O(4.32%~6.04%)和Na2O/K2O均较高(2.23~9.15),主量元素反映板内玄武岩的特点。
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下庄铀矿田北西西向分布的白垩纪角闪辉绿岩构成区内基性脉岩的主体。
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It can be the filtration layer of the dikes, river canal, seacoast, concrete and retaining walls.
可以做堤坝, 河渠, 海岸, 混凝土,挡土墙的过滤层.
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The layered intrusions show chilled contacts against the diabases but are traversed by the dikes.
层状侵入体与辉绿岩接触处有冷凝边,但都被岩脉所穿插.
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The ultrabasic bodies are generally concordant intrusions, with related feeder dikes.
超基性岩一般为具有补给岩墙的整合侵入体.
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Hornblende bearing varieties bridge the gap over to amphibolites which are in bands and dikes.
含角闪石的变种填补了带状和脉状角闪岩的中间相.
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