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MPL-B680F-SJ72AA

MPL-B680F-SJ72AA

发布时间:2019-04-23 16:49:28点击率:

所属行业:五金工业品-> 电子电工-> 配电装置、开关柜、照明箱
价格:¥2254
规格:MPL-B680F-SJ72AA
供货总量:1

MPL-B680F-SJ72AA

MPL-B680F-SJ72AA

MPL-B680F-SJ72AA

MPL-B680F-SJ72AA

一般水文工作者习惯通过现场测量一组水位对应流量数据,以此来推导出近似的水位和流量的曲线(函数),这样在曲线上的任《联系人;欧先生》
《座机:0592-5709825》
《传真:0592-5917519》
《24小时热线:18030229053微信同步》
《QQ :2479261344》
《QQ邮箱:2479261344@qq》
何一个水位值(X)都会有一个对应的流量值(Y),这就是我们经常说的水位流量关系曲线。但是这个曲线多是非线性、不规则的,用这样的曲线计算出来的数据误差会非常大。

而平升公司目前采用的是水文观测数据主流的算法:一元三点拉格朗日插值公式,将实测数据以外的节点用已知点进行插值。插值计算时,是选取靠近插值点的3个节点代入公式,因此对于一条曲线就有多个插值公式,采用分段插值的方法,将该曲线使用范围内的每一组对应值插算出来。

选取节点应从小到大顺序选取,曲线的两个端点必须选入,其间可随曲线曲率变化而定,端点附近与曲率变化较大处选密一些,反之可选稀一些,选取节点数量应满足计算精度的要求且等差为佳,节点不得少于3个。

数学公式推演

任给定F中2n+2个数x1,x2,…,xn+1,y1,y2,…,yn+1,其中x1,x2,…xn+1互不相同,则存在的次数不超过n

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联系方式
姓名:  欧工
部门:  销售部
职位:  销售
电话:  
手机:  
  
地址:  福建厦门市厦门市思明区嘉禾路293号宝达大厦1003室
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