draining area 中文意思是什麼

draining area 解釋
排水面積
  • draining : 滴干
  • area : n. 1. 面積；平地；地面。2. 空地；〈英國〉地下室前的空地。3. 地區，地方；〈比喻〉區域；范圍。
  1. Beginning with the analyse of present situation and cause of formation of saline - alkali land, the irrigated area overall water salt trends are analysed, and the irrigated area saline - alkali land and the groundwater level and distribution law of groundwater degree of mineralization are expounded, the trendence of irrigated area saline - alkali land is put forward. then water salt balance model is estanbished according to the relationship of irrigating and drainage. regarding the irrigated area as a balance area, by analysis of mineralization degree of water pumping from the yellow river and drained off water from irrigated area, the change of the draining off water ion is forcasted in water reducing condition

    課題研究主要從鹽堿地現狀與成因及灌區總體水鹽動態分析兩方面入手，闡述了灌區鹽堿地、地下水位、地下水礦化度的分佈規律，分析了灌區鹽堿地的成因及變化趨勢；根據灌區灌溉、排水條件與以上各種因素的關系，建立了灌區水鹽均衡模型；把灌區作為一個均衡區，通過對黃河來水礦化度、灌區排水礦化度的分析，預測了在灌溉引水、排水減少時排水離子量的變化；運用灌區水鹽動態模型原理，對灌區現狀（ 1998 、 2000年）與規劃水平年總體水鹽平衡進行了計算；總結分析了灌區水鹽動態變化趨勢，計算並提出了排水控制標準。
  2. Topmodel is based on the calculation of ln ( / tan # ) index and its distribution. in terms of a dem, a is the cumulative upslope area draining through per contour length to a pixel, which reflects the tendency of water to accumulate at any point in the catchment, tan # is the local slope angle of the cell, which reflects the tendency for gravitational forces to move that water downslide

    Topmodel是以計算ln （ tan ）指數及其分佈為基礎的。對于柵格dem ，為上坡區域通過單位等高線長匯集到單元網格內的面積，反映徑流在流域中任一點的累積趨勢， tan為單元網格的坡度，反映重力使徑流順坡移動的趨勢。
  3. Research on technology of draining methane off shallow borholes in a stress - relaxation area of working face

    工作面卸壓區淺孔瓦斯抽放技術研究
  4. According to the annual production program, predictted the subsidence by probability - integral method, and then advanced the method that restore the irrigation and draining function of the water system on the ground in the subsidence area, it is changing route of ditch and river system reconstruction

    根據張集礦年度開采計劃，對礦區未來可能產生的開采沉陷採用概率積分法進行預計，根據預計結果提出了塌陷區內水系灌溉排澇功能的動態恢復治理方案，即水渠改道和水系重建。
  5. This paper states on the problems in water preventing and draining of highway tunnel of loess in gansu province and near area. firstly, it discusses the method to analyze and calculate the affect of groundwater characteristic, estiniate of tunnel water quantity and the varying of water contained in loess to the stability of surrounding rock mass according to the principle of groundwater leaking, hydraulic penetrating principle, groundwater dynamic law, groundwater flowing modulus low and so on

    本文針對甘肅省內外部分黃土公路隧道防排水方面存在的問題，首先根據黃土層地下水運規律，按水力學滲流原理並應用地下水動力學法和地下水徑流模數法等方法，探討了黃土層地下水情特性、隧道滲透涌水量估算和水對圍巖穩定性影響的分析計算方法。
  6. Siphon system applied in draining off roof water with large area

    虹吸系統在大面積屋面排水中的應用
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