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VFO? Variable Frequency Oscillator? 可变频率振荡器，变频振荡器?
This paper has a discussion on the dissipated heat, vibration proof and maintenance of variable frequency speed regulating device in AC electrical haulage shearer, and puts forward some basis of design and methods of maintenance. 分析了变频调速装置在交流电牵引采煤机上使用时关于散热、抗震和维护的几个问题 ,并提出一些设计的依据和维护的方法。
Therefore, MTMD is suitable for controlling structural vibration with variable frequencies. 因此，MTMD适用于控制频率变化的结构振动。
variable frequency vibration test 变频振动试验
EAL-68 with small amount of additive is suitable for R407C in variable frequency rotary compressors of YZB-20R. EAL-68型POE润滑油加入少量添加剂可以作为R407C的YZB-20R型变频压缩机用油。
The frequency inverters has a function of variable voltage and variable frequency. 频率逆变器具有变压、变频功能。
Energy consumption of variable frequency drive pump are analyzed,and makes sugg estions about its suitable application. 详细分析了变频调速水泵的能耗，对如何合理应用变频调速水泵进行了探讨。
An idea of design is provided for asynchronous m otor of variable frequency variable speed in this paper mainly. 本文主要为变频调速异步电动机的设计提供一条思路。
Motor for deflector roll in entry side is requested to use AC variable frequency control. 卷取机卸卷小车行走电机采用交流变频调速控制。
Then the parameterand implement frame of variable frequency test system are dis cussed. 对变频试验系统的参数和实际组件进行了讨论。
A new improved discrete variable voltage variable frequency equivalent sinusoidal control method is presented. 一种新的离散变压变频等效正弦控制方法被提出。
In this paper, a randomization sampling system with AC variable frequency technology, based on IP was introduced. 介绍一种以工控机为核心,利用交流变频调速技术实现的随机取样系统。
To achieve the basic waveforms (sine, square, etc.) display, a variable frequency and amplitude control. 能够实现基本波形（正弦，方波等）的显示功能，有频率和幅度变量的控制。
In this paper the ultrafine of attapulgite from Xuyi was studied by variable frequency planet-type grinding mill. 以盱眙产优质凹凸棒石粘土为研究对象,用变频式行星球磨机对其进行超细粉碎。
The VRV air-conditioning system of variable frequency technology can achieve the effect of energy conservation. 然而，封包的排程方法与睡眠模式的运作方式对于行动站台的能源消耗会产生很大的影响。
The frequency inverters has a function of variable voltage and variable frequency . 频率逆变器具有变压、变频功能。
A twist wire connected with multicircuit or variable frequency circuit board is winded on the industrial pipeline. 远处有多匝与变频电路板连接的螺旋状电线缠绕在工业管道上。
Coil car motor for Uncoiler equipment is requested to use AC variable frequency control. 开卷机上卷小车行走电机采用交流变频调速控制。
In order to reduce energy consumption in air conditioning system, VRV of variable frequency technology is used in air conditioning. 为了降低空调系统的能耗,用变频技术空调中的变冷媒流量系统(VRV)能达到节能效果;
The article introduces the solution of ac variable frequency speed adjusting used in 45-R driller gyration and elevating-walking system.It has trem... 本文介绍的是45-R钻机回转和提升,走行系统采用交流变频调速传动方案及其具有卓越的调速性能和显著的节能效果。