1)  porametric vibration
参变振动
2)  variability
参变
1.
Capacihve meisture sensor regards frequency signal as variability, it is made up of capacitive probe, high frequency surge cirouit, dispart frequency instrument and metal shield box.
电容式水分传感器以频率信号作为参变量,由电容探头、高频振荡电路、分频器和金属屏蔽盒构成一体。
3)  parametric system
参变系统
1.
By using this method not only the periodic solutions of the 2nd order parametric systems under external excitation can be solved, but the stability of these periodic solutions can also be decided.
给出受外激励二阶参变系统周期解的新的计算方法,它对于相当广泛一类方程均可适用,并可对解的稳定性作出判断。
4)  isoparametric transformation
等参变换
1.
By means of an isoparametric transformation,the stiffness matrix and the effective nodeforces of the parallelogram element are calcnlatel.
本文通过等参变换推导了平行四边形单元的刚度矩阵及等效节点力的表达形式,计算表明它们均为显式积分,等效节点力可通过静力等效原则得到。
2.
The quadrature formula about surface integral on any quadrilateral element is deduced by means of isoparametric transformation and bilinear interpolation.
通过对三维有界区域的边界曲面作四边形网格剖分,用有限元方法处理高斯公式中的曲面积分,由等参变换及双线性插值导出任意四边形单元上曲面积分的数值求积公式。
3.
An approximation format of tetrahedral isoparametric element for solving the 3-dimensional 2-order Dirichlet problem is presented in this paper first,then based on the optical estima- tion of isoparametric transformation,we prove the convergence of the format given,obtain the optical H~1 estimate error.
基于对等参变换的细致估计,证明了格式的收敛性,并得到了H~1-误差的最优估计。
5)  Pipelines With Changing Parameters
参变管道
1.
The Analysis on the Response Characteristics of Pipelines With Changing Parameters Under Random Traffic Loads;
参变管道系统在随机交通载荷下响应特征分析
6)  internal parameters
内参变量
参考词条
补充资料:点振子振动和点电极振子振动
分子式:
CAS号:

性质:又称点振子振动和点电极振子振动。振动能量绝大部分集中在点电极范围内,形成“能量封闭”的振动模式。振子电极面远小于压电陶瓷片的总面积,且与厚度有适宜的匹配关系。在交变电场作用下,沿厚度方向产生振动,其振幅随着至电极中心距离的增加,呈指数式衰减。谐振频率与压电陶瓷片的厚度有关。为提高频率通常将压电陶瓷片磨得很薄,有时考虑到压电陶瓷自身强度太低,可用特制的陶瓷片作垫片来防止压电陶瓷片损坏。常用于高频场合。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。