高频

By using fitting device 7A52-aluminum alloy and 45-steel samples are made to remain zero electric potential and stay in the stainless steel netty active screen connected with the cathode in the high-frequency pulse plasma diffusion equipment .

通过工装使7A52铝合金及45钢试样在高频脉冲等离子扩渗炉中处于零电位，并置于接阴极的不锈钢网状活性屏中。

The quality of the neutral line and its grounding will influence directly to the operation of the combined hi-frequency switching mode power supply.

交流供电线路中的中线及中线接地质量的好坏，对通信用高频开关组合电源的工作有直接影响，实际应用中经常出现因中线及中线接地故障造成设备损坏，因此需加强对中线的维护。

The way of high frequency intermittent aeration suppresses the activity of nitrobacteria, and also...

实验结果表明，高频间歇式曝气方式在抑制了硝酸细菌的活性的同时也消除了亚硝酸盐浓度和pH大幅波动对亚硝酸细菌和厌氧氨氧化细菌活性的影响；在曝气阶段，溶解氧浓度被控制在1.2～1.4mg·L-1，亚硝酸细菌成为主体细菌，亚硝酸盐积累；在缺氧阶段，随着溶解氧浓度迅速降低，厌氧氨氧化细菌成为优势菌种，曝气阶段积累的亚硝酸盐与氨氮同时被去除。

Prony algorithm is very sensitive for noise, the generator angle data collected by PMU usually contains much noise of high frequency.

Prony算法对噪声比较敏感，PMU采集的功角数据通常都含有大量高频噪声。

Vibroseis that is capable of exciting high frequency signals and is of strong noise immunity has been widely used in petroleum industry both at home and abroad.

石油地震勘探使用的可控震源可以激发高频信号，并具有较强的抗干扰能力，已在国内外广泛使用。

Berause of the fact that when image resolution is reduced, the image high-frequency characteristics are distorted and the image low-frequency characteristics are held, this method has noiseproof feature and large-scale weak edge detection property.

由于低分辨率采样下图像高频特征失真较大，而低频特征失真较小的原因，这一算法能很好地抑制图像噪声，有效地提取出图像中大尺度弱边缘。

Objective To assess the value of high frequency ultrasound in early finding and diagnosing carciˉnoma of thyroid in health screening.

目的 探讨高频超声在健康体检中对甲状腺癌的早期发现及诊断价值。

Domestic and overseas new technologies about conference system based on digital network in recent years are introduced, namely digital processing and transmission, high-frequency and infrared transmission, NOMA, mute corresponding interaction, camera shot auto tracking, video conference system, interactive digital board, multi-assembly-room system control, and audio-video and lighting network centralized control platform technology.

着重介绍近年国内外基于数字网络的会议系统新技术如数字处理和传输、高频和红外传输、NOMA、哑声对应互动、摄像自动跟踪、会议电视、交互数字白板以及多会议室系统控制和声像灯光网络化集控平台等技术，并举出典型的应用实例。

Methods Ninety-two clinically confirmed RA patients underwent high frequency ultrasonography. Maximum thickness and arterial RI of the wrist synovium were measured in active and nonactive stage.

选择临床确诊RA患者92例行高频超声检查，分别测量活动期和非活动期RA患者腕关节滑膜内动脉的RI值及滑膜最大厚度。

Considering the low effective of GARCH model for high frequency data,the nonparametric method is adopted to estimate the value at risk of high frequency data.

文章在GARCH模型对高频数据低效的情况下，从非参数的角度给出风险价值一个相合估计量，这个估计量不依赖于总体分布。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。