In recent years there is a lot of research on water quality models of pollutant in a wide dimension river in and out of the country, and little research is studies on cleaning efficiency and removal mechanism of different dimension river and ditch in the nature.
国内外对河流的净化研究多着重在某一大河段污染物水质模型的研究,对不同尺度河流和沟渠的净化效果和机理研究还未见报道。
Natural Removal Effect of Nitrogen and Phosphorus in River and Ditch;
河流和沟渠对氮磷的自然净化效果的试验研究
February fills dyke.
〔谚语〕二月雨雪多，沟渠流成河。
A dead-end channel extending from the main stream of a river.
死水潭，死河从主河道分流出来的死水沟渠
"canal:an artificial waterway or artificially improved river used for travel, shipping, or irrigation."
运河,沟渠:人工水道或人工修缮的河流,用于旅行、航运或灌溉.
An artificial waterway or artificially improved river used for travel, shipping, or irrigation.
运河，沟渠人工水道或人工修缮的河流，用于旅行、航运或灌溉
Interception and Removal Effection of Agriculture Drainage Ditch on Nitrogen and Phosphorus;
农田排水沟渠对流失氮、磷的截留和去除效应
Probe into Ditch Arranging Mode and its Perfecting Way in Farmland Tidy-up --Take Xinji City, Hebei Province as an Example;
农地整理中沟渠整理的模式和完善途径探讨——以河北省辛集市为例
A ditch perted water from the stream into the fields.
一条沟渠把水从河里引向田间。
They dug channels to bring in water from the Grand Canal to irrigate the rice fields.
他们挖掘沟渠从大运河引水灌溉稻田。
A ditch perted the water from the stream into the fields.
一条渠沟把水从河里导入田间。
For the convenience of analysis, the studied region was pided into 8 landscape elements, such as cultivated land. wasteland, village and town, saltern, shrimp pond, mudflat, reservoir and pond, and river and ditch.
将研究区域分为耕地、荒地、村镇、盐田、虾池、滩涂、库塘以及河流沟渠8个景现要素。
The stream of truth flows through its cha els of mistakes.
真理之川从它的错误之沟渠中流过。
Adjustment of the Production Structure and Calculation of Structural Negentropy in the Watershed of Nihe Gully in Chunhua County;
淳化泥河沟流域产业结构调整和结构负熵计算
You can still visit the Lingqu canal dug in 214 B. C. to connect the Xiang and the Pearl Rivers.
你还可游览灵渠，这个运河修筑于公元前214年，沟通了湘江水系和珠江水系。
They cut a channel from the river to bring water to the field.
他们从河那里挖了条沟渠把水引到地里。
Design of backbone project for control of Ganquan ditch in Qinhe Water Basin
沁河流域甘泉沟治沟骨干工程的设计
Yes, I said to myself, I too love everything that flows: rivers, sewers, lava, semen, blood, bile, words, sentences.
是啊，我对自己说，我也爱流动的一切：河流、沟、岩、液、、汁、和句子。
In addition to the ancient lake beds are regions carved with dense networks of channels, seemingly created by rainfall and surface runoff.
除了古老湖床之外，某些地区表面还镂刻著致密的沟渠网络，似乎是降雨和表面迳流的杰作。