After the overall evaluating the waterway of fuzhou city is given in this dissertation , the software of surface - water modeling system is adopted to construct the hydrokinetic modeling and water quality modeling for a part waterway . the method of respondent coefficient is adopted to calculate the water environment capacity , and the pollution loading rate needed to be cut down is got 本文在对福州市城市内河进行综合评价后,采用地表水环境模型系统( sms )软件对其中一段内河进行了水动力学和水质模拟,并采用影响系数法计算了理想的水环境容量,得出需要削减的污染负荷。
On the base of thoroughly studying dynamic characteristic of tractor - implement combination , a control project of three parameters was put forward in the paper . the three parameters were engine load rate , drive wheel slip and work resistance . an integrated control model based on three parameters was established , which reflects colligated dynamic character of the unit 拖拉机作业机组中,很多参数存在着耦合作用,给综合控制带来一定的难度,本文在深入研究机组动态特性的基础上,提出了发动机负荷率、驱动轮滑转率和作业阻力三参数的综合控制方案,它反映了机组的综合动态特征,并建立了基于这三参数的综合控制模型。
The method for measuring the plane strain fracture toughness klc has been introduce to high polymer bonded explosives ( pbx ) by systematically studying technologies concerning the shape of specimen , the depth and its machining of crack , the loading rate , the measurement of critical fracture load , and the computation of klc , etc . the method has been used to test and study klc of three typical high polymer bonded explosives which are j2 , jl , j3 respectively both at normal temperature and unmoral temperature 本文以高聚物粘结炸药为研究对象,对测试高聚物粘结炸药的平面应变断裂韧度所涉及的样品形状、裂纹深度及裂纹制备、加载速度、临界断裂载荷p _ q的确定及平面应变断裂韧度k _ ( ic )的计算等方面进行深入研究,建立了较为完善的炸药平面应变断裂韧度测试方法。
In this dissertation , the beijing downtown area distribution system capability is evaiuated based on fuzzy theory according to the present condition of beijing distribution system . factors considered in this dissertation affecting the capability are including as follows : feeder load rate , voltage offset , network 1oss and n - l analysis . the load allocation in beijing distribution system of downtown area is got , and conclusion of the whole fuzzy distribution capability is reached 本论文根据北京城区配电供电网现状,应用模糊数学的方法,对影响配电网的供电能力的各个因素:线路负载率、电压偏移、网损和n - 1校验分析进行了评估,得到了北京城区配电网的负荷分布情况和整个北京城区配电网供电能力的模糊水平。