高频率的

The above effects of ultrasound on the structure and catalytic properties were related to the frequency of used ultrasound, and the relationship followed the Gaussian distribution curve approximately. The maximum was located at 50 kHz ultrasound.

并且超声波对催化剂结构和催化性能的影响与超声波频率有关，不同频率的超声波对LaBO〓催化剂结构和性能影响的规律近似高斯分布曲线，以50kHz的超声波影响最大。

A invariable -angle control circuit of parallel resonance converter which can get high precise control of inverter operating state is designed. Using the technique of phase-lock loop, the circuit implements automatic tracking to inverter operating frequency and constant control of capacitive power factor angle.

论文设计了能在频率自动跟踪的基础上实现高精度的逆变器运行状态控制的并联型逆变器定角控制电路，该电路采用锁相环技术，实现了逆变器工作频率的自动跟踪和容性功率因数角恒定控制。

The measurement of seismometer transfer function is implemented mainly in the low-frequency part, and transfer function in the high-frequency part is obtained with analysis and calculation.

本文对宽频带地震计的频率特性测试是在地震计的低频段进行，对于地震计高频段的频率特性采用理论分析计算获得。

A step-up transformer with an air core; used to produce high voltages at high frequencies.

有一个空气中心的升压器；常用来在高频率中产生高电压。

Taking the high precision on chip RTC as the time base control unit and using genetic algorithms to search the best OSCCAL register value, it will make the on chip RC oscillator generate a high precision clock for the MCU. This methord can be used fast and real time, so the CPU will get a stable clock source.

以AVR片内高精度时钟单元RTC为时基控制单元，以标准时间内MCU定时器的计数值为控制目标，采用遗传控制策略搜索对应MCU理想时钟频率的OSCCAL寄存器最佳设置值，快速、准确地对RC振荡频率进行校准，为CPU提供具有高抗干扰特性的精确时钟。

As they form the level of ionisation gradually builds up, affecting first the lower frequencies, and later higher frequencies as the level of ionisation increases.

当它们的电离度开始逐渐增强时，首先影响较低的频率，而更高频率通常显示出电离度的增加。

On some higher end reverbs you can see the decay split into 3 frequencies, low, medium, and high. With this kind of parameter control, you can have more control over how the different frequency ranges decay.

在高端的混响器中，你能发现decay被分开成为3个频率，低频、中频以及高频；对于这类的参数控制，你可以在不同的频率区域上设置更多的decay调整控制。

Chapter seven studies the methods of finding resonance frequency of centrifugal worm housing, analyses the relationship between the sound radiation of fan and wheel tip velocity index under different worm housing sound impedance and a new noise control method is presented for centrifugal fan.

第七章，研究了离心风机蜗壳基频共振频率及高阶模态频率的确定方法，分析了蜗壳声阻抗及其对叶轮声辐射轮缘速度指数的影响，为风机的降噪提供了一种新的途径。

According to a known work frequency, the medium thickness and its dielectric constant, the micro-band line width, the sizes of the substrate, the quadrant metallic plate and high resistant surface gap are computed preliminarily then to determine its final sizes by optimizing and emulating utilizing the emulation software of HFSS8.0 edition.

根据已知的工作频率、介质厚度及其介电常数初步计算出微带线宽度、介质基片大小、正方形金属贴片尺寸以及高阻表面间距；利用电磁场HFSS8.0版的仿真软件优化仿真确定最后尺寸。有望应用于双星定位收/发集成天线及相应工作频率的电路中。

Applications include very low distortion frequency synthesis and high-end consumer and pro- fessional digital audio applications.

应用包括非常低失真和高频率合成高端消费和亲由专业化程度极强的数字音频应用。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐