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- Number of Stars; Electromagnetic Spectrum Limit. 恒星数、电磁波谱极限.
- Wireless networking operates in the electromagnetic spectrum. 无线网络工作在电磁频谱中。
- All these forms of radiation together make up the electromagnetic spectrum. 所有这些形式的辐射共同组成了电磁频谱。
- Spread spectrum technology competes in the unregulated portion of the radio electromagnetic spectrum. 扩频技术是在无线电电磁频谱中无条例管制的部分中竞争。
- The electromagnetic spectrum covers an enormous range of frequencies and energies. 电磁波谱包括极大的频率和能量范围。
- Television systems, which transmit 30 picture frames per second, must operate on a broad electromagnetic spectrum. 每秒传输30幅图象画面的电视系统，它必须工作于宽带电磁波谱。
- Radio wave: Wave from the portion of the electromagnetic spectrum at lower frequencies than microwaves. 无线电波:电磁波谱中比红外辐射频率更低的电波部分。
- A device whose output is in an invisible region of the electromagnetic spectrum. 激光装置把信号输入于电磁光谱不可见区域的一种装置
- Each color in this image represents a different region of the electromagnetic spectrum, from X-rays to infrared light. 图中，每种颜色代表从红外到X射线的不同电磁波波段。
- The very center of the Sombrero glows across the electromagnetic spectrum, and is thought to house a large black hole. 草帽星系的中心在电磁波的所有波段都很明亮，因此一般认为那儿有一个大质量黑洞。
- Light visible to human eyes however occupies only a very narrow band in the whole electromagnetic spectrum. 然而,人眼可见的光在整个光谱中只占一个非常狭窄的频段。
- Television systems, which transmit 30 picture frames per second, must operate on a broad electromagnetic spectrum . 每秒传输30幅图象画面的电视系统，它必须工作于宽带电磁波谱。
- Nitrogen doping allowed the material to absorb a broad range of light energy, including energy from the visible region of the electromagnetic spectrum. 氮掺杂可以让这种材料吸收广泛的光能,包括电磁波谱中的可见光区域。
- The arti-cle introduces characteristics of UML,and describes battlefield electromagnetic spectrum management system's requirements by UML. 该文简要介绍了UML的特点,并使用UML对战场频谱管理系统进行了有效的需求分析。
- Electromagnetic Waves: Start from Maxwell's equations to investigate the electromagnetic spectrum and such propagation properties. 电磁波：从马克斯威尔方程式出发谈论电磁波特性与电磁波传输性质。
- Every few milliseconds, a FHSS signal bounces between different specific points in a designated "spread" of the electromagnetic spectrum, reducing interference from other signals and making it very difficult to eavesdrop on the transmission. 每隔几毫秒，FHSS信号在指定“扩展”的电磁频谱的不同频率点上跳动，减少其它信号的干扰，使它在传输中难以被窃听到。
- The survey covered a broad spectrum of topic. 这本简史涉及的话题范围很广。
- As a result,the government has stepped in to regulate this public space,requiring radio stations or television networks,for example,to have licenses to broadcasting certain portions of the electromagnetic spectrum. 因此，政府出面为（使用）这个公共空间制定了规章条例，例如要求电台或电视网在某些电磁频段中广播要用许可证。
- Every few milliseconds,a FHSS signal bounces between different specific points in a designated "spread" of the electromagnetic spectrum,reducing interference from other signals and making it very difficult to eavesdrop on the transmission. 每隔几毫秒，FHSS信号在指定“扩展”的电磁频谱的不同频率点上跳动，减少其它信号的干扰，使它在传输中难以被窃听到。
