查询词典 high-speed transmission

The requirements for lasers,optical setups,recording ma terials and chemical processing to make large-format holograms of great scenes are discussed.A model of Suzhou Industrial Park measuring 160×180cm,and other large models were recorded using an argon ion laser with an etalon on self-prep ared ultra-fine-grain silver halide plates(average grain size:20nm).Large-for mat transmission holograms (size:50×40cm) of high diffraction efficiency and lo w noise level were obtained with proper exposure and chemical processing.

分析了制作大幅面大场景激光再现全息图对激光器及光路布置、记录介质、化学处理等方面的特殊要求，用自制的颗粒平均尺寸为20nm的超细颗粒卤化银全息干板及带标准具的氩离子激光器，对场景面积达160×180cm的苏州工业园区等模型作全息记录，经适当曝光和化学处理，制得了幅面达50×40cm，且具有较高衍射效率和较低噪声的透射全息图。

The article introduced the 64 kbit/s serial data transmission channel for relay protection signal,which can overcome the defects of tradition high frequency channel.

模拟试验的必要性传统的高频保护收发信机在电力系统继电保护信号的传输方面起到了很重要的作用。

It is used for inside communications in the power system and for transmitting information about maintenance of transmission line,and may be also used for common public service network,and as high frequency channel,movement signal and communication channel for relay protection in power system.

用于电力系统内部的通信及输电线路维护保养信息的传送，也可用于一般的公共服务网络，作为电力系统继电保护的高频通道、运动信号及通信频道等使用，同时能起到良好导体屏蔽地线的作用。

He therefore proposed the use of high-voltage shunt reactors, shunt resistors in the circuit breaker to install, using metal oxide surge arresters and other measures to limit over-voltage and, through the electromagnetic transient simulation verification, can operate in a safe range of over-voltage limit inside, so that the transmission system to maintain safe and stable operation.

因此，提出了使用高压并联电抗器、在断路器上加装并联电阻、采用金属氧化物避雷器等限制操作过电压的措施，并通过电磁暂态仿真计算验证，能将操作过电压限制在安全范围内，使输电系统保持安全、稳定运行。

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 main structure is a solder bridge red shell plus a single quasi-two reducer, simple structure, high transmission efficiency, self - light, optional ABS, apply to all kinds of road vehicles and passenger cars.

其主要结构是冲焊桥壳加准双线单机减速器，结构简单，传动效率高，自重轻，可选装ABS ，适用于各种公路运输车及客车。

The main business comprises two parts. 1: the production of fiber-optic transmission equipment, PCM integrated access devices, communications portfolio with high-frequency switch power supply; Second: Sales Scheduling switches, power line carrier communication equipment and outdoor equipment (resistance line filter, coupling capacitors, combined with filter) and so on.

一：生产光纤传输设备、PCM综合接入设备、通信用高频开关组合电源；二：销售调度交换机、电力线载波通信设备和户外设备（线路阻波器、耦合电容器、结合滤波器）等。

Helicoid hydraulic motor makes up of bypass valve, motor, universal joint and transmission shaft, whose driving force is wellbore circulating fluid. It can be applied to bridge plug or cement plug treatment combined with grind shoe and other tools by mechanical energy for bottomhole rotation transferred from the energy of high pressure fluid.

螺杆钻具是以井筒循环液体为动力的井下钻具，由旁通阀、马达、万向节和传动轴4部分组成，其工艺特点是将高压液体的能量转变为井下旋转的机械能，带动井下磨鞋或其他工具，来处理井筒桥塞或水泥塞。

Furthermore, they continuously transmit radio signals of low power and ultra high frequency. They are also equipped with atomic clocks. When GPS receivers intend to calculate its GPS position on the earth, they will receive the signals from satellites, calculate transmission time with a pre-stored ephemeri, and then calculate the distances between themselves and at least four GPS satellites with the method of trilateration.

所有的卫星架有原子钟，当GPS接收器要找出自己目前在地球表面上的位置时，会接收各卫星的讯号，并依储存的星历表计算传送时间，再利用三边测量法订出自己与至少四颗GPS卫星之间的精确距离，即可算出所在位置。

Many products such as extra-high voltage XLPE cable with rated voltages of 220KV and up to ,plastic insulated cable,control cable,ACSR with rated voltages of 500KV and up to,aluminum alloy stranded conductors,OPGW, series of low smoke low halogen/halogenfree flame retardant or fire resistance XLPE cables,ship cable,rubber sheathed mined flexible cable signaling cable,computer cable,cable used for digital transmisson,submarine cable,optical fiber cable,underground cable and so on have been the first choice in large or middlesized power transmission and distribution projects at home and abord.

塑料绝缘电缆、控制电缆、220KV及以下超高压交联电缆、500KV及以下超高压充油电缆及附件、500KV及以下钢芯铝绞线、铝合金导线、OPGW光纤复合架空导线、低烟低卤阻燃、耐火系列交联电缆、船用电缆、矿用橡套软电缆、信号电缆、计算机电缆、数据传输电缆、海底电缆、海底光缆、地铁电缆等产品，已广泛成为国内外大中型输变电及配电工程项目的首选产品；多项产品的技术含量和生产能力均居国内领先地位，其中20多顶产品荣获部、省科技进步奖、精品名牌称号、部分产品还受到党和国家领导人的嘉奖。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。