drainage ditch

A Computer Simulation Model for Optimal Combination of Drainage Ditch Network and Second-Stage Pumping Stations in Polder Area

圩垸内部排水沟网与二级泵站优化组合的计算机模拟模型

Research on the Filtration System of Farmland Drainage Ditch Construction and the Embankment Material

农田排水沟道渗滤系统构建及护砌材料试验研究

Relational Analysis on Water Qualities in Observation Well and in Drainage Ditch

排水地段观测井与排水渠水质相关分析

Talking about the Application of Blind Drainage Ditch on Road Surface

浅谈路面排水盲沟的应用

Application of ultrasonic flowmeter of water drainage ditch to underground mine water drainage system

超声波明渠流量计在井下排水监测系统中的应用

We must dig a drainage ditch to run off the water .

我们得挖一条排水渠把水排掉。

Finite Element Analysis for An Array of Wells Replaced by A Drainage Ditch

用排水沟代替排水井列的有限单元法分析

Effect of Rainfall Runoff on Nitrogen and Phosphorus Loss in Farming Drainage Ditch

降水对农田排水沟渠中氮磷流失的影响

The designing method for the sectional area of drainage ditch in roadway at mine

煤矿巷道排水沟断面设计方法

Application of Irrigation and Drainage Ditch Lining Works

排灌沟渠衬砌技术的应用

The Realization Scheme of Non-outage Reformation of Circulating Water Drainage Ditch

循环水排水沟道不停机改造

This paper studies the application of digital elevation model ( DEM ) to the design of the surface drainage ditch system .

研究数字高程模型（DEM）在滑坡地表排水辅助设计中的应用。

Seepage treatment for expansion joints at drainage ditch of unit 1 at Shazhou power plant

沙洲电厂1号机组排水沟伸缩缝泄漏处理

Study on the Interception of Nitrogen and Phosphorus by Macrophyte in Agriculture Drainage Ditch

水生植物对农田排水沟渠中氮、磷的截留效应

Alongside each irrigation canal a drainage ditch was dug .

沿着每一条灌溉渠，他们还挖了一条排水沟。

The drainage ditch shall be cleaned regularly .

排水沟应经常清理。

When the dead leaves were cleared away from the drainage ditch dirty water surged out .

当枯树叶子从排水沟中被清除后，脏水很快大量流出去了。

Sam was dredging the drainage ditch behind the town dump when the downpour began .

开始下倾盆大雨时山姆正在镇垃圾场后面疏浚排水沟。

The lather drainage ditch should be designed vertically to the counter line , and directly receives the drainage water .

斗沟垂直于等高线布置，直接承接农沟的排水。

With decompress well and drainage ditch to drain and decompress can effectively reduce groundwater level and prevent immersion outside reservoir .

减压井和排渗沟联合排渗减压是降低地下水位、防止库外浸没的有效措施。

Interception of Artificial Vegetation in Desert Area Study on the Interception of Nitrogen and Phosphorus by Macrophyte in Agriculture Drainage Ditch

沙漠人工植被降水截留特征研究水生植物对农田排水沟渠中氮、磷的截留效应

The existing highway design criterion only takes setting pavement longitudinal grade , side ditch and drainage ditch into account in order to eliminate surface water .

现有的公路设计中，考虑较多的仅仅是通过设置道路的纵坡、边沟及排水沟等设施来排除地表水。

The relief valve should never be solidly piped into a drainage ditch , sewer or sump .

安全阀绝不能用坚硬的管道连接到排水沟、水管或污水坑里。

In the past 30 years , the river branches suffered serious pollution and become drainage ditch in Guangzhou , as the economic development and urbanization and other factors .

过去30年，由于环境让位于经济的发展以及城市化等多种因素的影响，致使广州河涌遭受到严重污染，成为藏污纳垢的臭水沟。

Methods Using Yekang gel bait to killing cockroaches inside the residetial quarters and using hot smog in drainage ditch and heating ditch .

方法用晔康杀蟑胶饵对单位家属楼室内，用拜力坦热烟雾对排水沟、暖气沟进行现场灭蟑实验。

' The mountains were our playground , and the drainage ditch next to my home was so clean that we often swam to school , ' he says .

他说，那些山就是我们的游乐场，我家旁的排水沟里的水特别干，所以我们经常游泳去学校。

The indirect inspection method is to inspect whether the oil film is floating on the water or not in the drainage ditch of the tank , which is called oil film inspection method .

间接检测法是检测油罐排水沟水面是否漂浮油膜，也称油膜检测法，概述了相对密度差检测、高频电流检测、反光率检测、电阻检测、静电电容检测等间接检测法的原理和特征；

Thirty or forty years of last century , gold fish pond fish industry began declining , with more residents , gold fish pond in the aquarium later became a drainage ditch .

上个世纪三四十年代，金鱼池的养鱼业开始衰败，随着居民的增多，金鱼池的养鱼池后来也成了臭水沟。

In all , the measure of digging desalting drainage ditch has some limitations , but it can still improve properties of coastal saline soil certain extent , and promote improving and aging of saline soil preliminarily .

总体上讲，开挖排水除盐沟单一改良措施的改良效果存在一定局限性，但仍能一定程度改善滩涂土壤性质，促进滩涂土壤初步改良熟化。

The drainage and irrigation ditch system should be combined with roads and protection forest .

排灌沟系统、道路、防护林三者应尽可结合布设。