level of tail water 中文意思是什麼

level of tail water 解釋
下游水位
  • level : n 1 水平儀，水準儀；水準測量。2 水平線，水平面；水平狀態；平面，平地。3 水平，水準；水位；標準；...
  • of : OF ＝Old French 古法語。
  • tail : n 1 尾巴。2 尾狀物，垂下物；（西服的）垂尾，燕尾；〈pl 〉燕尾服。3 辮子；風箏尾巴。4 末端；結尾，...
  • water : n 1 水；雨水；露；〈常作 pl 〉 礦泉，溫泉；藥水。2 〈常 pl 〉水體；水域；水道；海；湖；河；海域；...
  1. It was specially pointed out that, when the tail water is constant maximum tide, the computed flood surface is higher than that of nonsteady current, so there is some safety superelevation. underestimation of the roughness will make downward bias to compute along - river surface and bring hidden trouble for flood control. to improve the section can decrease the water level or offset the water rise for increase of floodplains " roughness, but it need much engineering works

    特別提出，按照恆定流計算出來的設計水位比非恆定水位具有一定的安全儲備；而對于灘地糙率的低估又會造成設計水位的偏低，給防洪工作帶來隱患；如果利用改進斷面形式來降低水位或彌補糙率增加帶來的水位抬高，需要較大的工程量，所以平時應注意灘面的減糙管理工作。
  2. For the medium and small sized hydropower stations equipped with through - flow turbines under the condition of higher fluctuation range of the tail - water levels, the internal space of the auxiliary powerhouse under the maximum tail - water level is almost closed with poor ventilating and lighting condition

    摘要高變幅尾水位的中小型貫流式水電站，副廠房最高尾水位以下內部空間近乎封閉，廠房自然通風與採光條件較差。
  3. ( 5 ) new type difference tail - gates and their combinations are developed, which can decrease tail water level oscillation in tipping tail - gate controlling system. mathematic models are also obtained for the mentioned controlling systems, stability of which is analyzed

    （ 5 ）研製出新型差動尾門及不同的組合型式，克服了翻板門尾水大幅度振蕩問題，給出了差動式和翻板式尾水控制系統數學模型，並對它們的穩定性進行了理論分析。
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