downstream line 中文意思是什麼

downstream line 解釋
排出管線
  • downstream : adv. ,adj. 順流（的）；在下游（的）。
  • line : n 1 線；繩索；釣絲；測深度用繩，捲尺。 a fishing line 釣魚線。 be clever with rod and line 會釣魚...
  1. It is concluded : the determination of the center spacing may be conducted under the permissible elevation of the exit line of seepage surface on slope surface downstream. in the end, the author has analysed the seepage field what the holes are placed two rows along the slope height

    另外，在對比多種孔距的方案分析結果的基礎上，得出結論：排水孔孔距變化對邊坡滲流場沿邊坡走向方向水頭分佈影響明顯，布設排水孔應根據目標降深確定排水孔孔距。
  2. The first part mainly introduces the gis concept and contents of gis, the comparison between the related software and gis, the present condition and development trend of gis etc, then introduced how to use the gis technique in a specific way such as using the method of " the half - automatic to follow " to turn the map into arithmetic figure, using the method of " the automatic calculates " gets the length of the line and area of field etc, at last got the length and width of every cross section of the fabiela river which is located downstream of xiangshan mountain. this method is superior and time - saving comparing with collecting data on the spot, having important and actual application worth

    第一部分主要介紹了gis的概念和研究內容， gis與相關軟體的比較以及gis的現狀、發展趨勢、當前gis研究的熱點等等，然後具體介紹了用gis的相關技術如：用「半自動跟蹤」方法對地圖進行數字化，用「自動量算」方法得到線對象的長度、面對象的面積等，最終完成了象山水庫下游法別拉河河道地形數據資料的提取工作，這種方法與人工實地採集工作相比，有較強的優越性和重要的實際應用價值。
  3. For example, after the collapse of ditong dam in idaho, may 5, 1976, it was found that it was not impervious very well, the impervious curtain was built poorly. when the seepage went through the impervious curtain, the exit water from the pervious material of the downstream or the right side of dam through the foundation or certain line between the foundation and the dam caused contact scour and piping

    如美國愛得華州提堂壩於1976年5月5日潰決，事後調查分析，因壩基透水性大，防滲帷幕施工質量差，滲流穿透帷幕，經地基或地基與壩的接觸面從壩體下游側透水料區逸出或從右壩肩繞滲經下游壩體逸出，出逸的水流引起了接觸沖刷和管涌，導致潰壩。
  4. As a link between upstream and downstream in petrol - chemical industry in china, pipeline transmission play an important role. along with the reform in china petrol and chemical line, the oil - gas pipe market was divided into three parts. there are three main competitors : petrol - china pipeline company ; transport & storage company and west - south transport, their competition are very fiery each other

    1998年中國三大石油公司的重組改制打破了中國油氣管道運輸業由一家企業? ?原中國石油天然氣總公司廊坊管道局一統天下的局面，在原管道局的基礎上，一分為二，分別組建了中國石油管道公司和中國石化管道儲運公司。
  5. Because existed power flow tracing method is too complex, a new power flow tracing method is put forward, including downstream tracing and upstream tracing. the method accords to proportional sharing principle, then the line flow " constitution of generator and load can be got, as well as relationship between generator and load

    針對現有潮流跟蹤的復雜性，提出了按比例分配原則進行潮流順流和逆流跟蹤的演算法，得到線路潮流中各用戶引起的潮流組成以及電源和負荷的供用電關系。
  6. Asymmetrical digital subscriber loop ( adsl ) is a prevalence fashion of broadband solutions today. it uses the installed base of copper telephone line as the transmission medium. with the combined use of sophisticated signal modulate methods and the high speed digital signal process technology, it ' s upstream speed can be 100kbps to 800kbps and the downstream delivers from 1mbps to 8mbps

    不對稱數字用戶線（ adsl ， asymmetricaldigitalsubscriberloop ）是目前比較流行的寬帶接入方式，它使用現有的銅質電話線作為傳輸介質，採用先進的信號調制方式和高速的數字信號處理技術相結合，上行速度為100kbps 800kbps ，下行速度為1mbps 8mbps 。
  7. It is generally agreed that digital subscriber line ( dsl ) and cable tv are broadband services in the downstream direction

    數字用戶傳輸線（ dsl ）和有限電視都是公認的下行寬帶。
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