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南阳引丹灌区渠首为何又叫南水北调中线渠首?南水北调中线工程和南阳引丹灌区工程有何关系?本文从南水北调中线渠首的产生及在整个南水北调中线工程贯通运行前,南水北调中线渠首就是南阳引丹灌区的一部分,已建成通水运行33年进行简要阐述。
What is the relationship between the midline of South-to-North Water Diversion Project and the project of Dandan Irrigation District in Nanyang? This paper starts from the emergence of the midline of South-to-North Water Diversion Project and before the mid-route of South-to-North Water Diversion Project runs through As part of the Nanyang Dan Irrigation District, a brief introduction has been made on the water-passing operation for 33 years.