Protective control system for coal-mine band conveyor is comprised of ground monitoring center, control substations and explosion protected computers. 煤矿用带式输送机保护控制装置系统主要由地面监控中心、井下各控制分站和防爆计算机构成。
Mongolia celebrates its National Pavilion Day today with a concert by City and Gobi Band in the Expo Center. 上海世博会今天迎来蒙古国家馆日,官方仪式上午在世博中心隆重举行。
They discovered also that every cycle, the dark band Milky Way's center called Galactic Equator intersects with Elliptical, the plane movement of the sun across the sky. 他们还发现,在每个周期中,称为“银道”的“银河”中心均会与椭圆星系相交,即太阳穿过天空进行的平面运动。
I want him to sing my songs, be in the band and I want him to be center stage, because that allows me to do my fucking thing without singing. 我想让他唱我写的歌,作乐队的成员,我想让他站在舞台中央,这样我才能好好地做我的份内事而不用兼顾着唱歌。
Free use of broad band in the Business Center and the Lounge. 免费在商务中心或行政酒廊使用宽频上网。
Here, the band of our Milky Way Galaxy runs through the center of the Winter Hexagon, while the Pleiades open star cluster is visible just above. 图中可以看到,我们的银河系从冬季六边形的中央穿过,图中上方可以看见昴星团。
It's said that, one day, a band of this city march on the road from the center of the city with playing oviduct, even the leader maked his oviduct towards sky. 据传说,有一天,该城里一个小乐队从市中心吹着喇叭招摇过市,领头者更是将喇叭翘到了天上。
The stability of pass band center wavelength λ 0 of a filter is the most important performance parameter in its applications. 滤光片通带中心波长λ0的稳定性,是使用过程中最重要的性能参数。
The simulation result shows that the SIR CGC band-pass filter has excellent band response. The value of the second band-pass center frequency is in accordance with the theory calculation. The location of the second band-pass center frequency can be controlled by tuning the SIR impedance ratio. 仿真结果表明该类型滤波器的频带响应具有优良的频带响应,二阶谐波通带的中心频率和理论计算一致,通过调整SIR谐振器的阻抗比可以控制二阶谐波中心频率的位置。
Especially, for the systems with four or five chains, at the energy band center, there exist extended states whose localization lengths are larger than the size of the systems, accordingly, they have greater conductance. 并且在能带中心处存在有局域长度大于系统大小的扩展态,处于这些态下的系统具有较大电导。
The calculated results shows the optical comb filter properties to be implemented. Firstly the suitable material number in one group, and band gap width and center position by adjusting position and thickness of element group are found. 数值结果指出,要实现光学梳状滤波,首先要找到合适的组元个数,并通过调节组元位置和厚度找到所需要的禁带中心位置与宽度;
E., CPa band in PSII reaction center core complex. So it is considered that PSII reaction center chlorophyll-protein complex must be included in CPa band; 此外,根据光系统Ⅱ反应中心核心复合物只有一条叶绿素蛋白质复合物带(CPa)的实验结果,我们认为光系统Ⅱ反应中心叶绿素蛋白质复合物即在CPa带中。
The red emission band indicates the local structure of luminescence center is quite similar with the traditional long-afterglow phosphor CaS ∶ Eu2+ Cl-. 红光发射带为硫元素进入晶格后在发光中心周围形成了类似长余辉材料CaS∶Eu2+,Cl-的局域结构。
The coupled interaction spoils the properties of evolution of amplitude, frequency band width, chirp, frequency, center position and phase; 耦合相互作用微扰产生的啁啾与高阶色散微扰作用的情况相似,对振幅、脉宽、频率、中心位置、相位的演化规律都有直接的影响,而且破坏了类明孤子脉冲的绝热特性;
The result of frequency band division is improved and the band overlapping between different scales is solved by changing the center frequency of mother wavelet based on the study of the frequency property of wavelet transform. 在研究小波变换频域特性的基础上,通过改变基小波的中心频率改善小波变换二进分解时的分频效果,解决各尺度之间的频域混叠问题。
The equivalant network has been established with lumped R-C recurrent network for multi-cell polysilicon gate with lengthy band, and the delay characteristics of center cell of the device has been solved. 以R&C链型网络模型对多单元硅栅长条建立了等效电路,由此解出器件中心单元电极的延迟特性。
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 E-business Model Based on CATV Wide Band the Research and Implement of the Model Layer of Center Platform 基于有线电视宽带网的电子商务模型中心平台模型层的研究与实现
Analysis of Band Structure in Hot Rolling Strip Center 热轧板卷中心带状组织分析
The results show that two weak bond states situated in both sides of band gap have been contracted and shifted to the center of the gap as the weak bond is stretched. 结果表明,当弱键拉伸时,两个弱键态移动并收缩至带隙中央;
It is found that the transmission in the band decreases and that in the gap increases as the disorder degree increases, and localization induced by disorder will spread from the band gap edge to the band center and the gap center. 研究发现,随着无序度的增加光子通带的透过率逐渐降低,而光子禁带中的透过率逐渐上升,即无序导致的局域化逐渐由光子带边向光子禁带中心和光子通带的中心扩展。
The PLL-based fractional frequency synthesizer possesses wide frequency band and fractional-N capability. Using the Sigma-delta fractional-N frequency control and information center regulation, it can meet the requirement of a digital TV receiver chip for local oscillation signals of each band. 所设计的基于PLL的小数频率合成器具有较宽的频带和小数分频能力,采用Sigma-delta小数分频控制和频率信息中心调节,满足数字电视接收芯片对各个频段的本地振荡信号的要求。
Lattice constant and filling rate have great influence to some extent determines the band gap width, center wavelength. 晶格常数和填充率对光子晶体带隙的影响很大,从一定程度上决定了带隙的宽度,中心波长。
A few changes was done on Vold-Kalman adaptive filter, and a band pass filter with center frequency vary with rotating speed was designed. 本文在Vold-Kalman自适应滤波器的基础上进行了改进,设计一个通带中心频率随着转速变化而变化的带通滤波器。
And the band gap center wavelength? 0 position remains unchanged. 而带隙中心波长?0位置基本不变。
Intrahepatic cholangiocarcinomas enhanced in the peripheral area of the tumors in the arterial phase, and cord-like light band extending from the peripheral areas to the center. The enhanced range was expanded as time prolonged. And washed out in the portal venous phase. 3. 6例胆管细胞癌表现为动脉相周边略高增强,同时见条索状光带从周边向中心延伸,并随时间延长强化范围逐渐增大,门静脉相造影剂退出。
The numerical results show that there are self-similarity in photonic bands and multifrequency photonic band gaps for the fractal photonic crystal, the center frequencies of the photonic band gaps are influenced by the shape of the fractal structure unit. 计算结果表明,这种准分形结构光子晶体的能带具有一定的自相似性。其带隙具有多频带隙的特性且带隙的中心频率会随着分形结构单元几何形状的改变而改变。
At the same time, it has good parameters of wide band, good directivity and stable phase center and so on. 同时,其具有较宽的工作带宽、良好的方向性和稳定的相位中心等性能参数。
As an important part of VTS, VHF communication system using VHF special frequency band to communicate between the ships and the VTS center. VHF通信子系统作为VTS的重要组成部分,采用VHF专用频段进行船舶与VTS中心间的语音通信。