频谱纯度的英文

• spectrum purity

• "频谱"英文翻译    frequency spectrum; frequenc ...
• "纯度"英文翻译    fineness; pureness; purity; ...
• "谱纯度" 英文翻译 :    spectral purity
• "光谱纯度" 英文翻译 :    spectral purity; spectrographic purity; spectroscopical purity; spectrum purity
• "色光谱纯度" 英文翻译 :    spectral purity of a colour
• "交叉光谱纯度" 英文翻译 :    cross-spectral purity
• "气相色谱纯度" 英文翻译 :    gas chromatographic purity
• "纯度" 英文翻译 :    fineness; pureness; purity; purity quotient; rate of purity 保持适当的空气纯度 maintain proper air purity; 纯度百分率 percentage purity; 纯度标准 purity rubric; 纯度试验 purity test
• "光谱纯" 英文翻译 :    spectroscopic pure◇光谱纯石英 spectrosil
• "色谱纯" 英文翻译 :    chromatographic pure; chromatographically pure
• "频谱" 英文翻译 :    frequency spectrum; frequency content; spectrum; power-density spectrum; power spectrum; [系统] spectral density◇频谱测定法 spectrometry; 频谱分析 spectrum analysis; frequency analysis; 频谱仪 frequency spectrograph
• "光谱纯的" 英文翻译 :    specpure (=spectroscopically pure); spectrographically pure; spectroscopic pure; spectroscopically pure
• "光谱纯色" 英文翻译 :    spectrally pure color; spectrally pure colours
• "光谱纯石英" 英文翻译 :    spectrosil
• "光谱纯试剂" 英文翻译 :    spectral pure reagent; spectrally pure reagent
• "光谱纯锌" 英文翻译 :    spectroscopically pure zinc
• "色谱纯的" 英文翻译 :    chromatographically pure
• "光谱纯滤光片" 英文翻译 :    spectral purity filter
• "不纯度" 英文翻译 :    impurity level
• "超纯度" 英文翻译 :    superpurity; transpassivity; ultra purity; ultrapurity
• "纯度，纯净" 英文翻译 :    purity
• "纯度；成色" 英文翻译 :    fineness
• "纯度计" 英文翻译 :    purity meter
• "低纯度" 英文翻译 :    low-purity
• "高纯度" 英文翻译 :    high purity; high-purity

• Sinewave spectral purity
  正弦波频谱纯度
• Through the research of direct digital synthesizer ( dds ) used as a divider in phase lock loop ( pll ) , a frequency synthesizer with small frequency resolution ratio and high purity frequency spectrum can be realized
  摘要通过对直接数字合成器在锁相环路中作为分频器应用的研究，使频率合成器可以在实现超细频率分辨率的同时达到高的频谱纯度。
• 3 . with comprehensive improvement of transponder including structural adjustment to lna ; optimization of ( phase locked loop ) pll filter ; structural adjustment to the transmitter and phase error adjustment to the intermediate frequency demodulation circuit , we have successfully enhanced sensitivity , expanded dynamic range , increased transmitting power and improved the spectrum purity ; decreased capture time for pll ; improved the signal quality after demodulation ; reduced its volume and power consumption . 4
  3 、对通信机的全面改进，包括lna结构的调整、锁相环环路滤波器的优化、发射部分结构的调整以及中频解调电路的相差调整，提高了系统的接收灵敏度、改善了本振的频谱纯度、减少了锁相环的锁定时间、使中频解调后的信号质量大为提高，同时还减少了体积、节约了系统的功耗。
• The technology of frequency synthesis is important in latter - day communication system . it ’ s widely used in wireless communication and electron system . with the high - speed development of technologies , higher stability , higher purity , broader range and larger output number of frequency are required in the frequency source of frequency synthesizer which is the core of this technology
  频率合成技术是近代通信系统的重要组成部分,在无线电通信与电子系统的各个领域中得到了广泛的应用。随着各种技术的飞速发展,人们对频率合成器的频率稳定度、频谱纯度、频率范围和输出频率的个数提出了越来越高的要求。