1) economic practical section
实用经济断面
1.
Design of optimal hydraulic section and economic practical section for compound canal;
复合断面渠道水力最佳断面及实用经济断面设计
2) an economical cross section
经济适用断面
3) economic section
经济断面
1.
An optimal design model of economic section is established based on the problems existed in design of economic section of lining canal by using of system analysis and minimizing the total cost as an objective function.
针对明渠衬砌渠道经济断面设计中存在的问题，应用系统分析的方法，以总费用（或投资）最小为目标，建立了经济断面优化设计模型，并通过区域网格法及计算机模拟运行，得出衬砌渠道在工程费用最省时的全部系统设计参数。
4) economical and practical
经济实用
1.
This article introduces the patterns of equipment , as well as its significance and function in teaching and education concerning the construction of economical and practical information technology and its facilities in rural primary and middle schools.
介绍了农村中小学建设经济实用型信息技术设施的配置模式及其在教育教学中的意义和作用。
6) economic practicality
经济实用性
补充资料：异形断面钢材(见异形断面型材)
异形断面钢材(见异形断面型材)
special section steel
，一、u以uu、’“飞豆on gQngC01异形断面钢材(speeial Seetion steel)见异形断面型材。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条