Then the supersonic ejector is used, the high frequency noise will take place when the pressure in store tanks decreases to a specific value, and the environment of tube area of the station is affected. 但使用超音速引射器后,当球罐压力下降到某一值时会产生高频噪声,影响管束区操作环境。
Study on Phase Tracing for Supersonic Frequency Induction Heating Power Supply Using IGBT IGBT超音频感应加热电源相位跟踪的研究
This paper introduced the application of infrared ray, supersonic wave, high frequency, laser, radioisotope, microwave and acoustic emission technology to wood industry. 介绍了红外、超声、高频、激光、同位素、微波、声发射、计算机等近代技术在木材工业上的应用概况。
Serial IGBT Type Supersonic Frequency Induction Heating Power Supply 串联型IGBT超音频感应加热电源
Shock cell structure plays a crucial role in the generation of jet screech and broadband shock noise in supersonic jet. The shock cell spacing is a fundamental parameter for predicting the jet screech frequency. 在超声速射流噪声的产生中,喷嘴出口的激波栅格结构有关键的作用,激波栅格的间距是推测激波噪声基频的基本参数。
Improvement on Distortion of Roll-teeth Mould by Supersonic Frequency Induction Hardening 超音频淬火改善轧齿模的畸变
Simulation and Research of Supersonic-Frequency Induction Water-Heater Based on MATLAB 基于MATLAB超音频感应加热热水器的仿真与研究
A Kind of Shield Method Used to Suppress Supersonic Impinging Jet Discrete Frequency Noise 超音速冲击射流离散频率噪声的屏蔽抑制方法
In this article we introduce the basic principle of supersonic measure distance, and analyze the structure and frequency characteristic of supersonic sensor. 本文介绍了超声测距的基本原理,对超声传感器的结构及频率特性进行了分析。
This paper introduces simply a 100 kW 20 kHz supersonic frequency induction heating power supply using IGBT modules. 介绍采用IGBT组成的100kw20kHz超音频感应加热电源。
Linear subsonic, supersonic and hypersonic analysis indicates that the vehicle is prone to body-freedom flutter resulting from the decrease in vibration frequency of the all-moveable wing at a high flight dynamic pressure. 线性亚音速的、超音速的以及高超声速分析表明机构由于全动平尾在高动压下振动频率的降低而非常容易产生机体自由颤振。
Based on middle and supersonic frequency induction heating power supply, The continuous produce of spring wire was realized and has been applied in industry. 通过中频及超音频电源感应加热的方式,实现了油回火弹簧钢丝的连续生产,并在工业生产中到了很好应用。
Using supersonic and speed-frequency variable technology, the computer vector automatic mixing control system based on single chip microprocessor has been designed. 通过运用超声波检测技术和变频技术,开发了基于单片机的矢量自动配比装置;
No matter the boundary layer is subsonic or supersonic, nonparallel effects are obvious at the critical Reynolds number, such that the critical Reynolds number is reduced and the frequency range of unstable disturbances is broadened at the critical Reynolds number. 无论是在亚音速还是超音速边界层中,非平行性的影响在临界雷诺数处比较明显,具体是一使得临界雷诺数变小,二使得临界雷诺数处增长扰动的频率范围变得更大。
In the design of supersonic wave treatment equipments, the key factor to output efficiency is the acoustic resonance frequency tracking technology. 在超声波治疗仪的设计中,声学系统谐振频率自动跟踪技术是保证输出效率的关键因素。