The virtual model library are constructed with VRML, which has a lot of advantages such as dynamical character, interactive character and low band transmission on Web, and so on. 其中虚拟模型库利用VRML构建,具有动态性、交互性、低带宽网络传输等特性,在实际教学中取得了良好的效果。
The low frequency band data pass unit comprises a plurality of stubs which are connected to the data bus in parallel and are formed as printed circuit board ( PCB) patterns. 低频段数据通过单元可包括多个短线,该短线与数据总线连接且被形成为印刷电路板(PCB)图案,短线相互平行;
For a stereo system, you can separately stereo couple the two high band crossovers, low band crossovers, etc. 对于一个立体声系统,你可以分离立体声为两个高频段、低频段分频器等。
Generally, low reflectance within low frequency band is difficultly obtained by using ordinary lossy material. 在使用普通的损耗材料进行设计时,很难在低频段获得较低的反射率。
Very low frequency band radiated field system 甚低频带辐射场系统
Progressive image transmission can help reducing the latency time and raise the browsing speed when transmitting images over low band links. 当通过窄带连接进行图像传输时,渐进图像传输可以减少用户等待时间,提高浏览速度。
The design of low band gap polymers 低能带隙聚合物的设计
At present our country has several Radio Frequency Simulation Systems ( RFSS), but in low band ( 1-2GHz), the angle precision of Radio Frequency Array as a key target can hardly be insured by hardware ways, and often hardly to meet the experimental requirement. 目前国内已有多套射频仿真系统,但关键指标之一&阵面角位置精度,在低频段(1-2GHz)通过硬件方法精度很难提高,经常难以达到试验使用要求。
A Summary and Probe for Low Band Radio Communication 低频无线通信的综述与探索
And waveguide has a too large structure to satisfy the requirement when working at a low frequency band. 而波导天线传感器在衰减较小的低频区尺寸太大也达不到要求。
This system mainly aims at the network transmission with the low band width, in this plan, the compression decoding technology, the transmission protocol and so on are consistent with at present newest solution maintenance; 本系统主要针对低带宽的网络传输,本方案中选取的解压缩技术、传输协议等均与目前最新的解决方案保持一致;
In the low frequency band, the distribution of electron number density almost does not affect the reflectance. 在低频段,电子数密度的分布对功率反射系数几乎没有影响;
The data of polar motion, rotation of the earth and atmospheric excitation func-tion are analysed by the Auto-Regression power spectrum method, and their spectra at low frequency band are obtained. 本文用自回归功率谱方法分析了极移、地球自转和大气激发函数的资料,得到了它们的低频谱。
The method can directly detect the fault characteristic signals in low frequency band and achieve fault diagnosis. 该方法直接检测故障的低频特征信号,完成故障诊断。
Design and Realization on the Low Frequency Band Pass Filter with Center Frequency Adjustment 中心频率可调节的低频带通滤波器设计与实现
The switching supply power supply controlled by the microcontroller and Variable Frequence in low band and multi-wave 、 big power supply controlled by the electronic switch bridge for changing phase were designed. 设计了一种应用单片机控制的高频开关电源和用电子开关桥换相的低频变频、多波形大功率电源。
The hardware was an integration control circuit, the fuction of which including: signals collection, low band fliter, PWM singal output, H-Bridge circuit, clutch control and etc. 硬件系统是以单片机为核心的集成控制电路,主要功能包括:传感器信号的实时采集,二阶低通滤波,助力扭矩的PWM控制,H桥电路驱动直流电动机以及离合器控制等;
At the beginning of the instance of the hard real-time task release, its priority is set in low band and is promoted to high band after a period of time. 强实时任务实例到达后,优先级设置在低带,经过一段时间后将其优先级提升到高带;
The new kind of photocatalytic materials, such as bismuth titanate ( Bi4Ti3O12 Bi12TiO20) have high photocatalytic efficiency and low band gap. Application of the new materials will be promising. 以钛酸铋(Bi4Ti3O12、Bi12TriO20)为代表的新型光催化材料,有着催化效率高,低能隙等突出的优点,有着广阔的应用前景。
The results show that with the addition of electrical conductive fiber the dielectric constants of the CIP coating increased, and the peak of the reflectivity of the radar absorbing coating to the low band. 发现导电纤维的添加使磁性金属微粉CIP吸波涂层的介电常数增大,使得吸波涂层的吸收峰向低频移动,有利于改善低频段的吸收效果;
It is important of applications of low band gap polymers to improve the properties of their photoelectric devices. 低能带隙聚合物对光电器件具有重要的意义。
Microprocessor Control Active Band Filter& Impletation. of a Digital Low Band Filter Mixed with Analogue Circuit Central Programmable Frequency 微处理器控制有源带通滤波器&一种数字与模拟电路相混合的低频带通中心频率可编程滤波器的实现
It is easy to observe slow P-wave in the condition of large porosity and low frequency band. 低频、高孔隙度条件更有利于慢纵波的观测。
The ECC has advantages such as high security, easy calculation, low band request, low memory and demand and quick speed, because of which lots of productions appeared. 由于其安全性高、计算量小、带宽要求低、存储量小、处理速度快等特点,在椭圆曲线密码体制的研究上涌现出了大量的成果。
With the popularity of SAW products on a large scale, the frequency at the low band had been used up already. This situation is restricting the development of SAW devices badly. 随着SAW产品的大规模普及,声表面波器件的频带在较低段已经达到饱和,这严重制约了SAW产品的发展。
Poly ( 2,7-carbazole) derivatives, incorporated by electron-withdrawing group in the main chain, form a new low band gap photoactive donor materials. 聚2,7-咔唑材料的衍生物通过与吸电子基团共轭链接能够形成一类新型窄带隙光活性给体材料。
So we synthesize a new type of low band gap, high carrier mobility organic semiconductor materials for organic photovoltaic cells, and optimized the fabrication of the device to obtain higher PCE. 1. 为此,本文开展了新型窄带隙高载流子迁移率的有机半导体材料用于有机光伏电池的研究,优化器件的制备工艺,获得了较高的光电转换效率。
In the view of the shortcoming of the traditional PFC chip in slow transient response, the OTA is developed with low band width filter function and innovative slew rate enhancement circuits. 针对传统PFC芯片瞬态响应慢的缺点,本文采用具有低带宽滤波功能和新颖压摆率增强结构的跨导型误差放大器。
The discovery of The Direct Digital Frequency Synthesizer is a revolution in the development of frequency synthesis technique, which consists of the phase accumulator, the sine look-up table, the digital to analog converter and the low band filter. 直接数字频率合成技术(DDS)的出现是频率合成技术的一次革命。DDS由相位累加器、正弦波形ROM、DAC以及外加滤波器构成。