带宽

States, the backbone is composed entirely of fiber-optic cable, with bandwidths ranging from 155 Mbps to 2.5 Gbps.

在美国，主干完全由光缆组成，其带宽从155兆比特/秒到2.5吉比特/秒。

The method is successfully used to SAW filter with center frequency of 914 MHz,bandwidth of 17 MHz.

并成功地用于914 MHz，带宽17 MHz滤波器的设计。

The design process is simple and can be simulated by the sophisticated SAW unit electrode and interdigital parameters.The parameters adjustment is very simple when filter center frequency and bandwidth changes.

设计过程简洁，可采用成熟的SAW单元电极和叉指参数进行计算机模拟，且当所设计的滤波器通带频率和带宽变化时，参数调整方便。

The design of a surface acoustic wave filter with a center frequency of 44?MHz, a 1?dB bandwidth of 8?MHz, an out-of-band rejection of more than 60?

采用数字傅里叶变换技术设计并制作了一个中心频率为44MHz，1dB带宽为8MHz，带外抑制大于60dB，插损小于28dB的带通滤波器。

A compact and excellent band pass filter with 1.8 GHz center frequency and 250 MHz band pass was designed,which had one attenuation-pole on the high and low stop band respectively.The dimension of the filter was 2.0 mm×1.2 mm×0.9 mm,fitting for ...

实现了一个中心频率在1.8 GHz，带宽为250 MHz，且在高低禁带端各有一个衰减极点的优良小型化带通滤波器，其外形尺寸为2.0 mm×1.2 mm×0.9 mm，满足0805型号封装要求。

Experimental results show that, using formulas derived in this paper for filter designing, the expected bandwidth and ...

实验结果表明，应用导出的设计公式进行设计，预示的带宽和阻带衰减更接近实际。

While the second order full extension ETG finite element method is applied to solve the problems concerned with natural convection and forced convection, different discretization schemes are deduced respectively. Then the equations are solved by using the technology of variable bandwidth and mass diagonal matrix.

详细推导了应用二阶全展开ETG有限元法求解自然对流和强制对流问题时的有限元列式，并应用压力校正法与质量矩阵对角化及变带宽压缩存储技术对方程进行求解。

Searching for a novel glass system with excellent thermal stability and good optical performances is an effective approach to achieve Er3+-doped fiber amplifier with broad bandwidth and flatting gains.

探求新的具有优良的热学和光学性能的基质玻璃系统，是获得具有宽带宽和增益平坦的掺Er3+光纤放大器的一种有效途径。

A reconstruction signal is obtained by Fourier Series, and the optimum bandwidth of the measurement system is also presented.

而实际由电子器件组成的测试系统之带宽却都是有限的，因而在脉冲信号的测试过程中就必然会有

The definition and transformation relationship of natural frequency, bandwidth fre quency and dualˉten index frequency were studied.

文中研究了转台自然频率、带宽频率和双十指标频带的定义与相互转换关系。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。