排水暗管 的英文怎麼說
中文拼音 [bèishuǐànguǎn]
排水暗管
英文
closed drain-
Experiment and research on seepage effect by underground pipe drainage system of paddy field in saline soil coastland
濱海鹽土地區稻田暗管排水效果試驗研究Determining optimal space and depth of the subsurface plastic drainage tubes is a main task in planning and design of a drainage system
農田塑料暗管埋深和間距的確定，是塑料暗管排水系統規劃設計的主要任務，關繫到排水效果和投資效益。After analyzing the adaptability of molepipe drainage, an underground water table regulation is given out. finally, the efficiency of the drainage technique is determined after its comparison with gutter drainage and vertical drainage, and deep research on the effect of molepipe drainage on water table in a typically selected area
對暗管排水的適應性進行分析，提出了灌區地下水調控標準，與明溝排水和豎井排灌相比較，對暗管排水典型區調控地下水位的效果進行深入的分析研究，以確定這一排水技術的效果。The prelimi - narily selected geotextiles, based on the test results, will be further tested and evaluated in fields andthese experimental data will be important reference for selection of proper filters for yinbei drainageproject area
試驗用的2種土壤取自寧夏銀北暗管排水區，對12種不同土工織物的透水效果進行了測定和對比分析，其初選結果將用於野外現場作進一步觀測評價，並最終為寧夏銀北暗管排水濾料選擇提供依據。Analysis of spatial variability of soil characteristics and crop yield under subsurface drainage
暗管排水條件下土壤特性和作物產量的空間變異性分析Application of nitrogen leaching losses mixed simulative model in tile effluent from the drained paddy rice field
暗管排水稻田中氮素淋失動態混合模型及應用Pvc subdrainage is one kind of advanced drainage techniques developed in recent years in the world. it will have a promising future of wide application
塑料暗管是一種新型的排水材料，具有很好的排水效果，應用前景廣闊。The permeability of 12 types of geotextiles, used as sub - drain pipe filters, were tested andcompared under two kinds of soils sampled from ningxia yinbei drainage project area
採用一維和二維滲透模型對土工織物作為農田暗管排水外包濾料進行了試驗研究。Abstract : the permeability of 12 types of geotextiles, used as sub - drain pipe filters, were tested andcompared under two kinds of soils sampled from ningxia yinbei drainage project area
文摘:採用一維和二維滲透模型對土工織物作為農田暗管排水外包濾料進行了試驗研究。This paper evaluates the underground water resources and its safe levels of miming, and then studies the availability of molepipe drainage, a kind of practical underground water regulation technique. starting with the elevation of underground water resources and a safe level of mining through variable system theory, this paper analyzes the conditions of underground water resources based on the well - studied determination method of determining the two hydrographical coefficients : rainfall infiltration replenishment rate and irrigation replenishment rate. then considering irrigation, rainfall, drainage and other related factors, a mathematical model is set up for the calculation of underground water storage, exploitation on water regulation
論文從灌區的地下水資源及其可開采量評價分析方面入手，在對兩個主要的水文地質參數即降雨入滲補給系數、灌溉入滲補給系數確定方法研究的基礎上，對灌區的地下水資源狀況進行分析，依據灌區的灌溉、降雨、排水條件及各種現狀因素，建立了地下水資源量計算的數學模型，西安理工大學工程碩士專業學位論文計算得到青銅峽灌區地下水的最大補給量和可開采量;另外對在開發利用地下水資源過程中的地下水位的調控進行了初步的探討，在銀北灌區開展對暗管排水調控地下水位的試驗研究。Compared with the reality, it shows that this model and its parameters are defined reasonablly. to analyse the arrangement of drainage system with different spacings and depths, with unsteady flow formula and benefit index, this paper gives a two - dimensional non - linear programing model for arrangement of drainage system in the barley field, which can be solved by the method of projected gradient. by this model, we make out the optimum solution of spacings and depth of pvc pipe in littoral area of changjiang river that is s = 21. 5 8m, h = l. lm
論文通過對不同埋深、間距的塑料暗管排水布局的分析，結合非穩定流公式和效益指標，提出了麥田排水暗管布局的二維非線性規劃模型，並利用梯度投影法求解，得出長江下游濱海地區塑料排水暗管埋設的最優方案為埋深h = 1 . 1m ，間距s = 21 . 58m 。Includes 1pc of pot saucer in color black, burgundy or dark green and 1pc each of teacup placement, drain tube, and cotton carried bag
每組行方茶池含:陶制壺承（黑，豆沙紅或暗綠色） ，杯席，透明排水管及棉質環保袋各一隻分享友人