查询词典 irrigation

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. After analyzing the adaptability of molepipe drainage, an underground water table regulation is given out.

论文从灌区的地下水资源及其可开采量评价分析方面入手，在对两个主要的水文地质参数即降雨入渗补给系数、灌溉入渗补给系数确定方法研究的基础上，对灌区的地下水资源状况进行分析，依据灌区的灌溉、降雨、排水条件及各种现状因素，建立了地下水资源量计算的数学模型，西安理工大学工程硕士专业学位论文计算得到青铜峡灌区地下水的最大补给量和可开采量；另外对在开发利用地下水资源过程中的地下水位的调控进行了初步的探讨，在银北灌区开展对暗管排水调控地下水位的试验研究。

Irrigative principles is the basic principle to guide irrigation engineering layout design and irrigation decision-making.

灌溉原理是指导灌溉工程规划设计和管理决策实践的基本法则。

The paper analysed the dynamic characteristics of soil moisture in spring irrigation, irrigation plastochrone and crop growing period mainly because of the little impact of rainfall.

由于观测期间降雨对该区影响很小，主要分析了春灌期、灌溉间隔期和作物生长期土壤水分的变化特点。

The results show that because of saline water blending irrigation, the soil salt is cumulated, salification degree has positive correlation with irrigation water mineralization, soil sodium adsorption ratio increase and its impacted depths are different with mineralization degrees.

结果表明，微咸水灌溉后土壤积盐程度与灌溉水矿化度呈正相关；微咸水灌溉会使土壤饱和浸提液的SAR升高，且影响深度因灌溉水矿化度而异。

After water attaining a designated standard,some reclaimed water went industry's,some went farmland irrigation,the rest for storage which mainly used in farmland irrigation,forestry,con—servation of water and soil tO reduee it to discharge into the South-to-North Water Diversion Project／or guaranteeing the water quality which was the key research item.

充分利用中水灌溉以减少其排入南水北调输水干线，保证调水水质，是南水北调工程研究的重要项目，现就截污导流中水灌溉充分利用情况进行了分析。

At first, the method used the finite element method to design the combination plan of submains and hollow forgings capable of meeting with the requirement of the douches in a micro-irrigation system that the water flux and water-discharging uniformity of the douches be equilibrated, and the pressure heads of the correspondent submain units; next, the parameters of the design and the pressure heads were input into the dynamic programming model and then the optimal combination design of the diameters of various orders of micro-irrigation pipes in the system as well as the pressure heads necessary to operate the system was obtained.

提出了一种基于有限元法和动态规划法的微灌系统管网优化设计方法，该方法先利用有限元法，设计出符合灌水器平均流量和灌水均匀度要求的支管与毛管参数组合方案，及相应的支管单元操作压力水头，然后将这些参数组合与支管单元操作压力水头代入动态规划模型，即可设计出微灌系统各级管道管径的最优组合方案，并确定微灌系统所需的操作压力水头。

According to the basic theory of market ecoomics and micro-economics,the marktstyle of irrigation sector has been identified as unperfected nature monopolize market,withthe characteristic of the same water being saled to different markets by irrigation waterprovider.

运用市场经济理论和微观经济学的基本原理，分析了灌溉水市场的基本特征，确定灌溉水市场为厂商向不同市场销售同一产品的限制性自然垄断市场。

The premises of the simulation are that the runoff from upreach is 7.8× 108m3/a and the means of economization on water is in effect. When studied it was thought firstly the water for the lake area and the living plant of the oasis, then for forest-sod irrigation and farmland irrigation.

模拟计算是以上游下泄水量7.8×10~8m~3／a为前提条件，在实行节水措施，完善供水系统的情况下，首先满足维持和恢复一定规模湖泊面积，保证绿洲植被正常生长所需水量，然后考虑林草灌溉用水和农田灌溉用水量。

Different manufacturing type is different to irrigation works demand, the different villatic type supply to irrigation works also is put in vast difference.

不同的生产类型对水利需求不同，不同的村庄类型对水利的供给也存在巨大差异。

This paper pointed out many disadvantages of our now experience-based irrigation. The author deeply studied the decision support system of irrigation of the cucumber and romaine lettuce based on the transpiration rate and greenhouse environment factors —temperature, humidity and light.

本论文针对目前国内大多数温室采用传统的经验法进行灌溉存在的弊端，以黄瓜和生菜为研究对象，对以温度、湿度和光照强度等温室环境因子以及蒸腾速率为依据决策灌溉量进行了较为深入的研究。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了