| 1. | Another attribute is the flux or radiant power that can be delivered in that narrow frequency band .
另一个性质就是在这样窄的频带内可以给出很高的光通量或辐射功率。 |
| 2. | Many bats emit an echolocation call that contains a narrow frequency range and then analyze returning echoes to navigate and to detect prey
许多蝙蝠会发出频率?围狭窄的回声定位呼叫，然后分析回声来作导航与侦测猎物。 |
| 3. | There are several defects of the monitoring method using embedded optical fiber sensors , such as the narrow frequency operation band of the sensors and the expensive cost of the instrument system
光纤传感法也存在着不少缺点，如光纤频带窄、设备费用昂贵等。 |
| 4. | Only photons in a very narrow frequency range can be emitted by any material . led s that emit different colors are made of different semi - conductor materials , and require different energies to light them
以上仅为led并档使用的推荐办法，在实际生产中，用户则可以根据自己产品的特点进行相应的调整或以其它的办法使用。 |
| 5. | A large proportion of the bat ' s auditory receptors ( hair cells in the cochlea ) and large areas in the bat ' s brain are devoted to analyzing a narrow frequency range corresponding to a single harmonic of the returning echo
蝙蝠用很大一部分的听觉受器（耳蜗中的毛细胞）与大幅的脑部区域，来分析一段?围狭窄的频率，该频率正与回声的一个谐波相符。 |
| 6. | Since commercial pll ic came out , phase - locked - loop frequency synthesis has become widely accepted . but when narrow frequency - step is required , the loop bandwidth has to decrease while cannot meet the demand of frequency - hopping speed
数字锁相集成器件出现以来,锁相式频率合成器得到迅速发展,但是当需要窄频率步进时,环路带宽需要降低,致使锁定时间变长,不能满足快速跳频的要求。 |
| 7. | From some characteristics observed , such as the short lift time , narrow frequency band , fast frequency drift , quasi - periodic pulsation , spike event and complex magnetic structure , it is considered that the radiation mechanism of these events may be principally due to the electromagnetic waves magnified directly by the instable electronic cyclotron
从它们的观测特征：短寿命，窄频带，频率快速漂移，及尖峰事件与磁结构复杂的大黑子活动区密切相关等，认为这些事件的辐射机制可能是电子回旋脉泽不稳定直接放大电磁波所致。 |
| 8. | The controlled object hyvp ( hydraulic pressure vibration platform ) has the property of big loading pressure and rating power , so it need considerable transmitted and control power , it also has the property of high - level math model , and narrow frequency width in closed - loop , and bad stability . this thesis is based on the hpvs in the “ tiema project ”
被控对象(液压振动台)具有负载压力和额定功率相当大的特点,因此要求传输和控制的功率要相当可观;而且它还具有数学模型阶数高、闭环频带宽度窄、稳定性差等特点。 |
| 9. | In this thesis , a kind of software method is researched to realize the functions of fast acquisition , tracking and demodulation of pcm - cdma - bpsk intermediate frequency signals . conventional research on spread spectrum signals is in the case of ideal conditions , such as low code rate , narrow dynamic range , narrow frequency - changing range and so on
本论文将介绍一种软件模拟硬件的方法来实现pcm - cdma - bpsk中频信号的快捕、跟踪和解调。关于扩频信号的传统的研究是在理想的条件下，比如低码率、窄动态范围、窄频率变化范围等等。 |
