flood discharge短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 n.洪水流量 It introduces a diagram method for design of flood discharge trench utility section, which is more universal and vivid and can attain the goal of quick& optimized design. 介绍用图解法设计排洪沟的实用经济断面，此法可达到快速、优化设计的目的，并且具有通用性好，形象直观的特点。 cnki