1) fractional-N
分数分频
1.
It also features a fractional-N synthesizer with digital 2nd-order sigma-delta noise shaping,which can achieve a short lock time,a high frequency resolution,and an improved phase-noise spectrum.
采用分数分频技术,加速锁定过程并具有较小的输出频率间隔,利用Σ-Δ调制改善相位噪声性能。
2.
It also features a fractional-N synthesizer with digital 2 nd -order sigma-delta noise shaping, whi.
采用分数分频技术 ,具有较小的输出频率间隔 ,并利用Σ Δ调制改善相位噪声性能。
2) fractional frequency divider
分数分频器
3) frequency distribution
频数分布
1.
To investigate the frequency distribution of the scale of sex hormones in the middle and old aged persons.
探讨中老年男女性激素水平的频数分布类型。
2.
In this paper, the frequency distributions on daily averages of air pollutants: SO_2,NO_x,CO,TSP from each measuring point at different time in the whole city of Jinan, were hypotheiically tested.
本文假设检验了济南市大气污染物SO_2、NO_x、CO、TSP不同时间内全市及各测点日均值的频数分布,得出以上各污染物在不同时期内服从或近似服从对数正态分布的规律。
4) frequency analysis
频数分析
5) fractional divider
小数分频
1.
The design and implementation of fractional divider;
实用小数分频器的设计与实现
6) frequency division counter
分频计数
补充资料：连分数的渐近分数
连分数的渐近分数
convergent of a continued fraction
连分数的渐近分数l阴ve吧e时ofa阴‘毗d五，比.;n侧卫xp口.坦”八卯6‘] 见连分数(con tinued fraction).
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条