英语语法分析

Using the API model mentioned in this paper, the fractional spuriousness are reduced to the extent that the phase interpolation signal exactly matches the phase error.

采用本文研究的API内插模型，小数分频的尾数调制寄生谱可以抑制到相位内插信号准确地匹配相位误差的程度。

For the PLL has better performances in narrowband filtering and frequency tracking, the paper presents a new method which based on PLL accomplish the spuriousness restrained.

PLL具有良好的窄带和跟踪特性，文中提出了基于PLL的窄带滤波器杂散抑制方法。