查询词典 power transmission

The analysis of simulation result indicates that the CDMA system has much more superior performance on noise-immune; the continuous processing in the part of signal modulation can not improve the efficiency of spectrum in CDMA system; under the situation , making sure that the proximity of the reliability of information transmission to the unsmoothed system, the power of the transmission can decline to 90.5% of the unsmoothed system, the bandwidth of -50dB will decline to almost one half of the unsmoothed system in spread spectrum and dispread spectrum by using continuous WALSH codes.

仿真及分析结果表明：CDMA系统具有更优越的抗噪声性能；信息调制部分的平滑化处理在CDMA系统中不会改善频谱的利用效率；运用平滑化WALSH码进行扩频和解扩时，在保证信息传输可靠性与非平滑化系统接近的情况下，能够将发射功率降低到非平滑化系统的90.5%，-50dB带宽减小到非平滑化系统的一半左右，这有利于降低对临近频段的干扰，提高频谱的利用效率。

It is extensively used for different occasions that require DC power supply, including electrolytic chemistry, transmission, traction, electrostatic precipitation, electroplating and DC transmission etc.

整流变压器是指把电力网的三相正弦交流电压变换为所需要的交流整流电源的电压和相数的电源变压器，它广泛应用于点解化学、传动、牵引、静电除尘、电镀、直流输电等需要提供直流电源的场合。

At the same time, in the transmission system of construction machinery up-to-date, the power transferred by the transmission is improved greatly, while the gear friction is adopted in the transfer structure, so the heat loss will influence both the lubrication and cooling of the system, and the working intensity of the structure components. Therefore, the correction of the heat balance is necessary to the system.

同时，在现代工程机械的变速传动系统中，由于行星变速箱所传递的功率有了大幅的提高，但传递结构依然大量采用齿轮摩擦传动，其热损失不仅对系统的润滑和冷却有影响，而且对结构元件的工作强度也具有很大的影响，因此，也需要对该系统进行热平衡校核。

According to the signal transmission's problem in Inductive Coupled Power Transfer System., I propose a novel digital signal transmission method based on energy channel in this thesis.

针对感应耦合电能传输系统中的信号传输问题，提出一种新颖的基于能量通道的数字信号传输方法。

Base Station type Software versionTypes of carrier frequency board adoptedTypes of combiner adoptedWhether had obtained the network license or notIndoor type or outdoor type Whether the master port is separated from the remote-port The maximum carrier frequency capacity of single cabinet The maximum supportable sector numbers of single cabinetWhether it is dual-carrier frequency board or notMust it be paired configuration if it's dual-carrier frequency board (namely, the type of single carrier frequency station could only configure the dual-carrier frequency on hardware) The maximum achievable configuration of a single station of the single cabinetReceiver sensitivity The maximum expand capacity of a single base station (the maximum number of TRX in configuration / the number of cabinets which is required)(fill in according with the three sectors) Top box transmitted power (given separately a grade one combine and a grade two combine) The maximum output power of amplifier (voice, a single logical carrier frequency) The maximum output power of amplifier (EGPRS, a single logical carrier frequency)Whether it has tower-interfaceWhether it has built-in lightning protectionWhether it support the ultra-long cover / whether it need for software support (give simple description that how hardware and software could achieve this) The supporting condition of EGSM (it should be supported including by the carrier frequency, combiner) Dual-band carrier wave (whether it supports the mixed use of 900 M/1800M in the same cabinet) The commonality of duplicate parts Whether it can built-in transmission unitThe single cabinet size (high × width × deep) Installation method Whether it can place against the wallThe basic frame full-configured weight and the supportable number of carrier frequencyThe expansion frame full-configured weight and the supportable number of carrier frequency

基站型号软件版本号采用载频板型号采用合路器型号是否已取得入网许可室内型or室外型是否是主远端分离单机柜最大载频容量单机柜最大支持的扇区数是否是双载频板如是双载频板，是否必须成对配置(即单载频站型只能硬件配置双载频)单机柜可达到的单站最大配置接收机灵敏度单基站最大扩展能力(最大配置TRX数/需机柜数)(按3扇区填写)机顶发射功率(分别给出一级合路与两级合路)功放最大输出功率功放最大输出功率(EGPRS，单个逻辑载频)有无塔放接口有无内置避雷装置是否支持超远覆盖/是否需要软件支持(简单描述软硬件如何实现)EGSM支持情况(包括载频、合路器均应支持)双频段载波（是否支持900M/1800M在同一机柜内混合使用）备件通用性是否可以内置传输单元单机柜尺寸安装方式可否靠墙放置基本架满配重量及支持载频数扩容架满配重量及支持载频数是否支持基本架与扩容架跨扇区满配功耗满配时重量供电方式机柜进出线方式合路器损耗合路能力：几合一单扇区最大支持几载频合路到一副天线/采用几个合路器单扇区载频达到需要增加一副天线时，是否支持两级合路换以不增加天线如两级合路插损为是否支持基带跳频和合成跳频每单个合路器在从低载频数向高载频数扩容时，是否还需要增加硬件可用性指标MTBFMTTR系统中断服务时间硬件是否支持EGPRS本次报价软件版本号开始支持EGPRS的软件版本号其他特点注： 1 应分别填写出来按照本次报价要求所采用的全部BTS型号和采用的合路器型号 2 列出本报价要求的全部室外型基站与高功放单元

Because of this large-scale interconnected power networks which are operating closely at a limited transmission level and all kinds of fast controllers which are called on to improve systems dynamic behavior, such as fast exciters、 HVDC、 FACTS and so on, the modern power system is inherently a nonlinear system, called as a stressed power system.

对于上述重载电力系统，因为传统的线性化分析方法不容易计及系统内部非线性动态结构信息，所以很难揭示其一些非线性奇异现象的实质。所以，目前国内外，用于研究强非线性系统的动态特性的理论依据主要是向量场正则形理论。

With the rapid development of the electric power industry, the utilization of the continuously increased capacity of the generator units, the extraordinary large power grid, and the extra-high voltage transmission network etc., the operation and the management of power system is becoming more and more complex.

电力工业的飞速发展，单机容量的不断增加，电网规模的日益扩大，使得电力系统的运行和管理越来越复杂。

Reactive power optimization of power system is not only an effective means to ensure power system operation securely and economically, but also one of the most important methods to improve the voltage quality and reduce the transmission loss.

电力系统无功优化是保证电力系统安全、经济运行的一项有效手段，是降低网络损耗、提高电压质量的重要措施。

The results of the simulation analysis and experiments indicate that the loss of ultraviolet scattering transmission in atmosphere is high because of the particle scattering and absorbing in solar-blind zone; that is, the received power can descend 20 dB with the distance increasing 10 times. Therefore, the ultraviolet scattering is fit for short range communication. In short range, the pulse extension due to scattering is at microsecond order and its influence for low and moderate bit rate communication systems is weak. Since the light output power of a single ultraviolet LED is low, a multi-LED array can be used to increase the transmit power and extend the communication range.

仿真分析与实验结果显示：日盲区紫外光在大气中散射传输时由于大气粒子的强烈散射与吸收，传输损耗较大，距离每增加10倍，接收功率下降20dB，因此日盲区紫外光大气散射通信适用于近距离通信场合；近距离传输时散射造成的光脉冲多径展宽为微秒量级，对中低速通信系统影响较小；单个紫外LED发光功率较低，可通过多个LED阵列来提高发射功率，增大通信距离。

The authors analyze the operation characteristic of distance protection of transmission line connecting wind farm with power grid under the variation of parameters such as the amplitude ratio of electromotive force at both sides, the phase difference of electromotive force at both sides, equivalent impedance of sources, system frequency and so on; based on the real-time current and electromotive force at wind farm side as well as the information of wind power generators participating power generation, a method to adaptively set the operation boundary of distance protection by use of the information at wind farm side only is proposed.

文章分析了风电场和电网联络线的距离保护随电源电势幅值比、电势相位差、电源等效阻抗、系统频率等参数变化时的动作特性，并基于风电场侧的实时电流和电势与参与发电的发电机信息，提出了仅利用风电场侧信息量自适应整定保护动作边界的方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。