1)  Variant-frequency vibration
变频振动
2)  variant frequency vibration cropping
变频振动下料
1.
Cropping mechanism is a key component for variant frequency vibration cropping,and its excited frequency directly affects manufacturing quality and production efficiency.
变频振动下料机构是变频振动系统的重要执行部件,其激振频率直接影响制造质量和生产效率。
3)  variable-frequency pile driver
变频振动沉桩机
4)  variable frequency
变频
1.
Study of application of variable frequency hydraulic straight-vibrating sieve;
变频液压直线振动筛的应用研究
2.
Energy saving analysis of the variable frequency circulating water pump in a hot water heating system;
热水供热系统变频循环水泵节能分析
3.
Brake test system incorporating virtual instrument and variable frequency technologies;
基于虚拟仪器和变频技术的制动器试验系统
5)  frequency conversion
变频
1.
Dyeing and printing machine synchronization system based on network and frequency conversion technologies;
基于网络和变频技术的印染机械同步系统
2.
Amelioration of frequency conversion drag system in entirely automatism flakeboard production line;
刨花板全自动生产线横锯推板采用变频交流拖动系统的改进
3.
The Application Analysis of Frequency Conversion Timing Technique in Power Plant;
火电厂变频调速技术的应用分析
6)  Variable-frequency
变频
1.
Application of DSP to Variable-frequency Control System of Boiler Feed Water;
DSP在锅炉给水变频控制系统中的应用
2.
Application of variable-frequency speed equipment on water supply in uptown;
变频供水设备在小区的应用
3.
The Study on the Control Device for Measuring the Transmission Line Parameters by Variable-frequency Electrical Measurement;
输电线路工频参数变频测量控制系统的研制
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。