一次导数 meaning in English
first order derivative
Examples
- With it , we can construct symmetric interpolating scaling function and its relevant average - interpolating scaling function with support . the former ' s 1st derivative can be computed with the latter
用它可以构造出具有紧支、插值特性的对称尺度函数和相应的平均插值尺度函数，且利用平均插值尺度函数可计算出相应对称插值尺度函数的一次导数。 - And we give method how to solve the problem when there are more than one kind of medium or the boundary is abnormity . because using symmetric interpolating seal function as the kisis con ' pmied by its rele ^ a ' it average - interpolating scaling function , the error can be less than computed by traditional method
由于选取对称尺度函数作为基函数，它的一次导数可利用与其对应的平均插值尺度函数来计算，这样可有效地降低用传统方法计算带来的误差。 - Three semi - active control algorithms based on energy absorbed , kinetic energy , and energy of deformation of buildings are investigated . in physics coordinate , both the dynamic characteristics of buildings controlled and the effects of semi - active control using them are studied . the choices of parameters of control devices are studied
基于地震作用下结构的能量响应方程，提出了根据结构吸收能量、相对动能和变形能的随时间变化(对时间的一次导数)进行结构的半主动“开关”减震的控制律；在物理坐标系中分析了这三种控制律的动力特征和控制效果，以及作动器参数的选取。