查询词典 irrigation canal

The precision identification has been made by open channel now measurement according to now measurement precision of non-throat flume in headwork of high main canal of the Dashuijiang irrigation project and the availability has also been evaluated based on quantitative and quantitative analysis.

大水港灌溉工程高干渠渠首无喉道量水槽的量水精度，采用明渠测流法进行精度鉴定，并在定量定性的基础上，评定量水槽的适用性。

By using the HYDRUS computer program, one dimensional water salt movement was simulated under diffirent well canal combined irrigation schemes with typical irrigation regime for cropping wheat in spring and corn in late summer.

针对灌区土壤地下水位高、地下水矿化度高、潜水排泄以蒸发为主等原因，研究了基本灌溉模式、井渠结合灌溉模式的改变对不同程度盐碱地改良的效果，提出适合银北灌区不同盐碱地的灌溉制度

Objective To assess the efficacy of NaClO irrigation of root canal at different temperatures.

目的：探讨温度变化对NaClO溶液冲洗根管效果的影响。

In chapter four the realtime integrated optimal operation of reservoir and canal irrigation systems under limited water supply is studied based on self-tuning adaptive control theory.

第四章基于自校正自适应控制的思想，研究了有限供水条件下水库与田间配水整合实时优化调度模型。

The main innovation of the thesis includes the research thinking of multireservoir operation is put forward in the integrated optimal operation of reservoir and canal irrigation systems, and the optimal control theory is introduced, and the limitations in the earlier works are removed.

本文主要的创新之处在于采用水库群调度的思路研究有限供水条件下水库和田间配水整合优化调度问题，并将优化控制理论引入到本文研究中，解决了前人模型中的缺陷。

For sustainable utilization of water resources, development of systems of well irrigation with well drainage and canal irrigation with ditch drainage was needed.

为水资源的可持续利用，要发展井灌井排渠灌沟排，以开发利用当地浅层地下水包括微咸水和咸水为基础，以引调可利用的地表水补源。

The Hohokam Indians developed intricate networks of canal s for irrigation, an agricultural engineering feat unsurpassed in pre-Columbian North America.

霍霍坎印第安人开发了复杂的运河网用于灌溉，这是前哥伦布时代北美最伟大的农业工程，这个成就在当时是不可逾越的。

The canal system was built in BC 250 years, have elapsed since the 2230 years of history, is the world's one of the oldest irrigation projects.

该渠系建于公元前250年，距今已有2230多年历史，是世界上最古老的水利灌溉工程之一。

The utilization coefficient of irrigation water contains the utilization coefficient of canal system water and field water.

灌溉水利用系数包括渠系水利用系数和田间水利用系数。

This system is major pointed to one irrigation district for planning water usemanagement and water distribution of decision making in canal system.

本系统主要针对某一区域，或某一灌区的计划用水管理及渠系水量调配决策。

On closer examination, though, this is not a vote for multilateralism but just the opposite.

仔细审视后我们发现，这并非是对多边主义投出的赞成票，而是恰好相反。

Uncovering their weak spots, so I can defeat them.

揭露出他们的弱点，这样我就可以打败他们了。