line frequency的例句大全

The Wigner Ville time frequency analysis in conjunction with properly selected OFDM parameters is applied to evaluate the signal dynamic range performance over the low voltage power line network.

为了研究OFDM信号在低压电力线上的传输情况，运用基于维格纳分布的时频分析方法对电力线上的信号进行分析。

Power frequency electromagnetic introduction on DC transmission line caused by a parallel proximate AC transmission line

交流线路对平行接近的直流线路的工频电磁感应

Long Delay Line with High Frequency and Large Bandwidth

高频大带宽长延迟线

This paper discusses the influence of line distribution capacitance on high frequency protection for directional negative phase-sequence and impedance elements, i. e. phase fault element and earth fault element.

本文将讨论线路分布电容对负序方向高频保护和阻抗元件（相间故障和接地故障元件）的影响。

The results showed that the time and frequency resolution hold the line in different frequency when using Harmonic wavelet transform.

分析结果表明，Harmonic小波变换在不同频率处时间及频率分辨率均保持不变。

Mathematical Model of the Power Frequency Electric Field under High Voltage Overhead Line

高压架空输电线下工频电场的数学模型

Frequency Stabilization of External Cavity Laser Diode by Using 1. 5 μ m C2H2 Absorption Line

外腔半导体激光器探测1.5μm波段乙炔分子谱线及稳频

This paper introduced the design and realization of a renewable frequency synthesizer on-line controlled by a EZ-USB in-terface chip with enhanced 51 core.

本文介绍了一种使用带51核的USB芯片控制DDS芯片AD9852实现在线可更新频率合成器的方法；

An Efficient Technique for High Precise Line Surveying and Positioning of the Orbital Vehicle by Using GPS Single Frequency Receiver

单频GPS进行高精度线路测量和有轨车辆定位的有效方法

Interface Improvement of the ZDD-12 Power Line Carrier Without Voice Frequency Fram

ZDD-12载波机退音频架接口改造方案

A frequency analysis system for single short microwave pulse which is developed by means of a ring of waveguide dispersive line is described in this paper.

提出环流波导色散线微波频率分析方法，介绍了环流波导色散线系统设计思想、电路工作原理、主要性能及应用结果。

A ring of waveguide dispersive line for single short pulse microwave frequency analysis

单次短脉冲微波频率分析系统&环流波导色散线

Ball Screw Frequency Spectrum Analysis and On-line Acceptance

滚珠丝杆副的频谱分析与在线验收

The paper describes the automatic control system in the production line sintering hollow brick with fine coal ash in AISC House Property Company. By using a frequency conversion governor to control the temperature of the roasting kiln, each performance index of the product is increased greatly.

介绍了鞍钢房产公司粉煤灰制品厂粉煤灰烧结空心砖生产线的自动化控制系统，采用变频调速器对焙烧窑进行温度控制，大大提高了产品的各项性能指标。

A 3-dimensional finite element model of large size vacuum transfer line was developed by us of the shell element supplied in ANSYS. The natural frequency of the structure was obtained.

采用有限元程序ANSYS，选用壳单元，以大型减压转油线为研究对象，得出了转油线的结构固有频率；

Third is to decrease the cost of imaging system. For CCD imaging sensor, the electric charge move to reading area under line unit one by one that limit the working frequency.

三是CCD摄像系统的成本问题，CCD的像点电荷都是以行为单位一步一步地转移到读出区的，这一个特征大大制约了CCD的工作频率。

At last, we talk about the key technique of power line communication, OFDM ( short for orthogonal frequency division multiplexing), and implement the simulation of transmission and reception using MATLAB.

文中最后，讨论了电力线载波的关键技术&OFDM正交频分复用技术，并应用MATLAB实现了信号收发器的仿真。

The system software from the EMS dispatching automation system and centralized UFLS device acquires the real-time observation data, low frequency on-line calculation and scheme of setting calculation ( Tangential load ratio or capacity).

该系统软件通过从EMS调度自动化系统和集中式低频减载装置实时获取观测数据，实现低频在线计算与方案整定计算（切负荷比例或容量）。

Due to the frequency selectivity and high insertion loss of SAW device, the input must be high pulse whose spectrum width can cover the center frequency of SAW tap delay line.

由于SAW器件具有频率选择性及较高的插入损耗，使得它的输入必须为高脉冲且脉冲的频谱宽度能覆盖SAW抽头延迟线的中心频率。

Frequency feature of S-band tapered magnetically insulated transmission line oscillator

超高频谐振式频率计S波段锥形磁绝缘线振荡器频率特性