查询词典 frequency bandwidth

It features ultra-low noise import pulp Senate carbon fiber, rigid speaker cone greatly strengthened, the effective bandwidth within a more flat frequency response, the unit used aluminum frame and aluminum wire voice coil. Shaker skeleton of the United States military material, light weight, high efficiency, so that the audio sound pressure increased significantly.

超低音单元采用进口纸浆参碳纤维，纸盆刚性大大加强，在有效的频宽内有更平坦的频率回应，单元采用铝盆架和铝扁线音圈，音圈骨架为美国军事物料制造，品质轻，效率高，使音频的声压大幅度提高，更具爆发力，灵敏度极高，低音磁路采用高效率的冷却系统，保证了。

It features ultra-low noise import pulp Senate carbon fiber, rigid speaker cone greatly strengthened, the effective bandwidth within a more flat frequency response, the unit used aluminum frame and aluminum wire voice coil. Shaker skeleton of the United States military material, light weight, high efficiency, so that the audio sound pressure increased significantly.

超低音單元採用進口紙漿參碳纖維，紙盆剛性大大加強，在有效的頻寬內有更平坦的頻率回應，單元採用鋁盆架和鋁扁線音圈，音圈骨架為美國軍事物料製造，品質輕，效率高，使音頻的聲壓大幅度提高，更具爆發力，靈敏度極高，低音磁路採用高效率的冷卻系統，保證了。

The designed central frequency of the filter is 2017.5MHz and the fractional bandwidth is 0.297%.The filter was fabricated with double-coated DyBa2Cu3O7 film on MgO wafer.

该滤波器的中心频率为2017.5MHz，相对带宽为0.297%，由MgO衬底上的双面DyBa2Cu3O7超导薄膜加工而成。

Recent progress in radio prototype has extended the horizons of radio technology by liberating chronics dependence on hard-wired characteristics including frequency band, channel bandwidth, and channel coding. These efforts have led us to the feasibility of dynamically programmable receivers system of software radio.

软件无线电系统的硬件结构与功能相对独立，这样就可以基于相对通用的硬件平台，通过软件实现不同的通信功能，并可对工作频率、系统频带、调制方式等进行编程控制，系统的灵活性大大增加。

There are three parts included. The first part is the prepositive-amplifier, it gets broadband high gain and flat frequency response. The second part is the U band quadrupler, which composed of two doublers using a PHEMT chip HMMC-5040, a Schottky diode of DMK-2790, a HMMC-5040 amplifier, and a fin-line transitional stage. Maximum output power higher than 60mW is obtained in V band. The third part is a 2nd harmonic gunn oscillator injection locked by the Fundamental Wave,which get about 2GHz locked bandwidth in W band.

电路主要由三部分组成，第一部分为采用HMMC-5618设计的前置放大器，实现了宽带高增益和平坦的频率响应；第二部分为设计的主体，由HMMC-5040设计的二倍频器、DMK-2790设计的二倍频器、HMMC-5040设计的放大器及鳍线过渡段组成的U波段四倍频器，在U波段实现了最高60mW以上的输出功率；第三部分为基波注入锁定谐波Gunn振荡器，在W波段实现了近2GHz锁定带宽。

Components that exhibit significant loss over a bandwidth of over 100 MHz, ferrites can be characterized as high frequency

电感及电容所组成的电磁波干扰滤波器，有可能会使电路感应而形成共振，造成额外有电磁波干扰问题的频带。

Firstly two characteristic points of the open-loop frequency are identified based on relay feedback experiments: the ultimate point and the bandwidth point.

通过继电反馈辨识系统开环带宽度点和临界点，利用带宽点的信息建立一阶加纯延迟模型。

Linear frequency-modulated pulse is one of the most important large time-bandwidth product signals, but it demands large amount of calculations for digital processing.

针对TMS320C6201的特点，提出了在VLIW体系结构下，提高FFT并行运算效率的方法，从而使系统完成512点数字脉冲压缩的时间仅为124us，基本达到TMS320C6201的性能极限。

Pseudo-random multi-frequency signal is invented and named by academician He Jishan. The bandwidth of PRMF signal is controllable, it's energy concentrates on several frequencies, which are equally spaced on log scale coordinates.

何继善院士发明和命名的伪随机多频信号，由于其带宽可控，能量主要集中在数个在对数坐标上呈等间距分布的频率上，是电法勘探的理想场源。

The objective of design optimization for the current loop is to maximize the cross-over frequency. The results show the stability is improved and the capability of suppressing the switching noise is far better than the original. The objective of design optimization for the voltage loop is to minimize the gain of the line ripple voltage.As a result the bandwidth minishes obviously and optimization design excelles in restraining the ripple.

主电路以总体积最小为优化目标，优化结果表明电路的体积减少了0.5%；电流环以开环穿越频率最大为目标，优化结果表明电流环的稳定性能得到了改善，开关噪声抑制能力明显优于优化前的；电压环以线纹波电压增益最小为目标，优化结果表明电压环的带宽明显减小，纹波抑制能力远远优于优化前的。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。