查询词典 GHz

Windows Aero requires high system specifications in order to work, with the minimum requirements of at least 1 GHz 32-bit (x86) or 64-bit (x64) processor, 1 GB of system memory and a DirectX 9 compatible graphics accelerator processor card with a minimum of 128 MB of Video RAM, installed with Windows Display Driver Model driver.

Windows Aero的要求高，系统规格，为了工作，符合最低要求，至少1 GHz 32位（ x86 ）或64位（ x64 ）处理器，为1 GB的系统记忆体，以及支持DirectX 9兼容的图形加速器处理器卡与最小128 MB的视讯RAM ，安装与Windows显示驱动模型的驱动程序。

In a caesium clock, the optimum frequency corresponds to 9,192,631,770 oscillations of the microwave per second (just over 9 GHz in frequency), so dividing the output electronically by this number provides one-second 'ticks' of the atomic clock.

对于铯原子钟，其最佳频率是微波每秒振动9，192，631，770次(频率略高于9 GHz)，而用电路把输出的信号除以这个数字就提供了原子钟的一声"滴答"。

By utilizing the cross-gain modulation effect and the period-one oscillation harmonic frequency-locked in an optically injected semiconductor laser, we can extract the wavelength conversional individual channel optical clock from the optical-time-division-multiplexing signal. In a FP-LD, we numerically simulate the extraction of 20 GHz optical clock at 1550 nm from the 2×20 Gb/s OTDM signal at 1555 nm, and experimentally obtain the -105 dBc/Hz phase noise frequency division clock of 12.36 GHz to 6.18 GHz with simultaneous wavelength conversion from 1550.24 nm to 1545.91 nm.

采用一个FP半导体激光器作为全光分路时钟提取及波长转换器，数值模拟实现了从波长为1555 nm、速率为2×20 Gb/s的光时分复用信号中提取出波长转换为1550 nm、重复频率为20 GHz的分路光时钟，实验完成了从波长为1550.24 nm、重复频率为12.36 GHz光脉冲信号中提取出相位噪声为-105 dBc/Hz的波长为1545.91 nm、重复频率6.18 GHz的分频光时钟。

The generated optical millimeter-wave signals have very high quality with an optical carrier and harmonic distortion suppression ratio of more than 38 and 36 dB at 40 and 72 GHz, respectively.

产生很纯的微波光讯号，40 GHz 和 72 GHz抑制载波讯号高达38 和 36 dB 。

The different width and length of Hilbert curve geometries were investigated by finite element method. The computation results show that the DGS rejects the signal at two frequencies 2.43 GHz and 7.11 GHz from 0~9 GHz with more than -15 dB suppression. Q factors of the Hilbert curve DGS is bigger than that of conventional DGS.

通过有限元法对不同Hilbert曲线宽度和长度的DGS结构微带线进行计算，计算结果表明，该结构在0~9 GHz频段内表现出2.43 GHz和7.11 GHz这2个谐振频率，对应频率的通带反射损耗低于-15 dB，并且阻带特性在谐振频率处比传统DGS微带线有更高的 Q 值。

Results Millemeter wave irradiation at frequency of 37.4,42.2 GHz and 53,60 GHz,with minimum power density of 5 and 3 mW/cm2,lowered learning and memory ability of adult offspring and reduced the content of dopamine in their brains.

结果 37.4、42.2 GHz和53、60 GHz毫米波导致子鼠学习记忆功能降低、脑中多巴胺含量下降的最小功率密度分别为5和3 mW/cm2，随功率密度增加，辐射导致胎仔损伤程度加重。

Measurement results indicate that, by changing the control bits in the gain control circuit and differential circuit, the 3-step peak-to-peak voltage amplitudes are 240, 170 and 115 mV and the center frequency of the impulse can be tuned from 3.2 to 4.1 GHz.

测试结果得到通过改变增益控制和微分电路中的控制位，3级输出脉冲电压峰峰值分别为240 mV、170 mV和115 mV，频谱中心频率可调范围为3.2 GHz 至4.1 GHz。

To verify this method, a 0.915/2.45 GHz dual band rat-race hybrid and a 0.915/2.58 GHz branch-line coupler were designed, fabricated, and measured.

此方法运用於双频段鼠圈式功率分配器和分枝线耦合器(Branch-line)，第一频段设计在0.915 GHz，并将原三倍频点移至2.45和2.58 GHz，形成双频特性。

In BS, two second-order sidebands beat to generate optical millimeter-wave with quadruple frequency in the 60 GHz photodiode.

实验显示，当射频频率为10 GHz时，可以产生频率为40 GHz的光载毫米波信号，得到的毫米波眼图和信号解调后的眼图效果都很好，功率代价小于1 dB。

Electromagnetic compatibility and Radio spectrum Matters;ElectroMagnetic Compatibility standard for Very Small Aperture Terminal, Satellite News Gathering, Satellite Interactive Terminals and Satellite User Terminals Earth Stations operated in the frequency rangesbetween 4 GHz and 30 GHz in the Fixed Satellite Service FSS

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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。