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一、土坝在西北之重要:西北今后之建设,着重在农畜水利,均与水土有密切的关系。西北的天然环境是土厚水深,没有水利,农畜无法依附。西北水利
First, earth dam important in the northwest: Northwest future construction, focusing on livestock farming, water and soil are closely related. The natural environment in the northwest is the depth of soil and water. There is no water conservancy and the livestock and poultry can not be attached. Northwest Water Resources