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narrowband
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狭带,窄带
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详细解释：
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以下为句子列表：
英文: Abstract: We have studied theoretically a beat effect in a four-level system due to fifth-order optical polarization,and considered the cases that the pump beams have either narrowband or broadband linewidth.We have found that the accuracy for the energy-
中文: 文摘:研究了四能级系统中基于五阶极化的拍频效应，考虑了抽运光束为窄带线宽或宽带线宽的情形.发现其对能级分裂的测量精度决定于光学跃迁的均匀增宽.也就是说，这种技术在测量与基态是偶极禁戒跃迁的两激发态之间的能级分裂时，可得到消除多普勒增宽的精度.
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英文: An algorithm for the suppression of narrowband interference in the direct sequence spread-spectrum (DSSS) systems is presented.
中文: 摘要提出了直接序列扩频通信系统中抑制窄带干扰的一种算法。
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英文: In some situations, the same narrowband signal can be reflected by surrounding objects onto two or more different paths so the reflected signals arrive at a receiver out of phase, sometimes virtually canceling each other out.
中文: 在某些情况下，相同的窄频讯号会因为附近物体的反射而产生两个到多个不同的路径，所以反射讯号不会同步抵达接收机，有时几乎还会彼此抵消。
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英文: PCCW provides key services in the areas of: integrated telecommunications; broadband solutions; connectivity; narrowband and interactive broadband (Internet Services); business e-solutions; data centers and related infrastructure.
中文: 电讯盈科之主要业务为：综合电讯服务、宽频方案服务、网络接驳服务、窄频及互动宽频服务（互联网服务）、商企电贸方案服务、数据中心及相关的基建业务等。
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英文: What is more, engineers expect these UWB units to be cheaper, smaller and less power-hungry than today's narrowband radio devices.
中文: 尤有甚者，工程师期望这些超宽频元件，能比今天的窄频无线电设备更便宜、更小、更不耗电。
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