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VFO? Variable Frequency Oscillator? 可变频率振荡器，变频振荡器?
Then，TOA each corresponding to the low frequency part of the FRFT with different resolution is estimated. 然后，估计出与各层低频系数分数阶傅立叶变换相对应的TOA。
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。
The signal's high frequency part attenuates seriously on the no repeater long-line transmission systems, so that the signal rectification is necessary. 无中继长线传输会出现信宿端信号严重失真的现象,矫正器是长线传输系统中的重要一环。
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。
At the same time it embed Fragile Watermark in image's high frequency part with the use of DCT so that Fragile Watermark can ... 同时它利用离散余弦变换;在图像的高频部分嵌入脆弱水印;使脆弱水印在遭受攻击或篡改时更易被损坏.
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。
At the same time it embed Fragile Watermark in image's high frequency part with the use of DCT so that Fragile Watermark can be shattered more easily when attacked or amended. 同时它利用离散余弦变换，在图像的高频部分嵌入脆弱水印，使脆弱水印在遭受攻击或篡改时更易被损坏。
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。
If there is hydrocarbon in the formation, an abnormal value will occur in the low frequency part of the amplitude spectrum ratio eurve o On the contrary, when no hydrocarbon exists in the formation there will be no abnormal value on the curve. 当地层含有油气时,在振幅谱比曲线的低频部分就出现异常值; 反之,不含油气时,就不出现振幅谱曲线异常。
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。
Result also shows that by simulating wide band velocity records we can get acceleration and displacement time histories, but high frequency part of acceleration time histories will have partial loss. 由宽频带速度记录也可得到加速度时程和位移时程,但对加速度时程高频成分会有一定的损失;