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- band spectrum resource 带状频谱方法
- By developing the spV tight-binding model, we study the band spectrum feature of the cagelike structure such as carbon clusters, carbon nanotubes, BN nanotubes in this thesis. 本论文发展sp~3s~*紧束缚模型,着重研究笼状纳米结构如碳巴基球、碳纳米管、纳米氮化硼管的能谱特征。
- But the mobile spectrum resource is limited, MAI, CCI and multipath fading are the bottlenecks of improving the mobile communications system performance. 但是移动通信频谱资源日益紧张,多址干扰、共信道干扰以及多径衰落的影响,都成为提高移动通信系统性能的瓶颈。
- A modified approach base on raised cosine impulse cancellation is proposed, which could effectively reduce PAPR with minimum out of band spectrum regrowth. Simulation results were also provided. 提出了一种基于升余弦脉冲峰值抵消的改进方案,在降低系统峰平比的同时避免削波引入的频谱恶化,给出了理论分析及相应的仿真结果与结论。
- The differences of ecosystem coupling relation characteristics in arid zone can be found by water-heat condition, land-scape band spectrum, microclimate effects and factitious activities, and so on. 干旱区生态系统耦合关系的特征差异表现在水热状况、景观带谱、小气候效应以及人为活动等方面。
- With the rising demand ever, the orbital resource and frequency spectrum resource for GSO communication satellite has been almost fully exploited and utilized, by means of cross polarization, multi coverage, and orbital space reduction. 随着通信需求的增长,人们采用极化复用、空间复用和缩小轨位间距等手段,对静止卫星轨位和无线电频谱资源作了接近极限的开发利用。
- continuous frequency band spectrum 连续频(带)谱, 连频谱
- Test results are analyzed in one third octave band spectrums mainly regarding vibration-sensitive instruments and emphasizing on low frequency band. 测试结果的分析主要是针对振动敏感仪器的,在频域内采用1/3倍频程频谱,重点考虑低频段的地面响应。
- spectrum resource spectrum requirements 频谱需求
- The X-ray diffraction (XRD), excitation, emission and phonon side band spectra of the upper and lower parts of crystals were measured. 测定了晶体下部与上部的X射线衍射图(XRD)、激发光谱、荧光光谱以及声子边带谱。
- wireless spectrum resource management 无线频谱资源管理
- He left when the band began to beat out pop music. 乐队一奏起流行音乐他就走了。
- Compared with the FDD system, TD-SCDMA adopting TDD, has no need of symmetrical frequency bands for uplink and downlink, and enables flexible and convenient planning and use of increasingly scarce spectrum resources. 与FDD系统相比,TD-SCDMA采用时分双工方式,上下行无需对称频段,可以见缝插针,灵活方便地规划使用日益紧张的频谱资源。
- The band played a military march. 乐队吹奏军队进行曲。
- New Technical Solutions on Utilizing C-band Spectrum Resource 开发和利用C频段资源的新途径
- A live band is always a good draw at a party. 现场演奏的乐队在聚会上总是很吸引人的。
- He was waylaid by a band of guerrillas. 他遭到游击队的狙击。
- Radio2 can be heard on the long wave band. 第二广播电台可在长波段收听到。
- The brass band is banging away in the park. 铜管乐队在公园里吹吹打打。
- The survey covered a broad spectrum of topic. 这本简史涉及的话题范围很广。