单频的

A scheme with decision feedback single carrier frequency domain equalizations can provide better system performance than OFDM.

采用判决反馈的单载波频域均衡方案，可以提供比编码的OFDM还好的性能。

In all previous studies patients treated with radiofrequency denervation have been selected after single diagnostic blocks resulting in a varying degree of relief.

过去所有的研究采用射频去神经术治疗单次诊断阻滞阳性的患者，结果症状得到了不同程度的缓解。

Based on modeling and simulation of the steady characteristic of five-phase hybrid stepping motor driver system with fixed-chopping frequency, constant total current driving and new pentagon winding connection pattern, the paper studies the dynamic characteristic of the system, especially single step response characteristic.

本文在建立绕组接法采用新五边形接法，驱动方式采用恒频斩波恒总流驱动时的五相混合式步进电动机系统的稳态仿真模型的基础上，分析研究了其动态特性，并重点对单步响应特性进行了研究与分析。

The Bit Error Ratio of the system is analyzed with the method of pilot symbol assisted modulation. Also the simulation result of the BER is provided and shows that the simulation and the analytical result are almost the same.

通过采用导引符号辅助相干解调进行信道估计的方法，给出了二维扩频系统在单音干扰环境中的误比特率分析结果，并对理论分析进行了仿真。

Designed for the lower angle precision of the MMW terminal guidance radar in angular tracking,the new algorithm based on high frequency resolution profile is proposed in this paper.

摘 要：针对毫米波末制导雷达角跟踪精度差的问题，提出基于频域高分辨像的单脉冲测角算法。

The following work has been done in the dissertation: LFM technique with quasi-single longitudinal laser diode is proposed, and the submodes effect in the laser diode on the displacement measuring range and accuracy is analyzed in detail.

在理论分析的基础上进行了大量实验。理论分析和实验结果表明，对于准单纵模半导体激光器线性调频干涉仪，半导体激光器的光频漂移，位相噪声以及边模效应对精度起主要作用。

In order to understand engine vibration caused by malfunctions such as improper spark-plug gap, deposit, spark-plug wear, injector failure, unfit belt tension, loosening of spark-plug cable, misfire, this study employs time-frequency analysis which is based on Short Time Fourier Transform.

为了要了解引擎在常见之故障如火星塞的积碳、间隙变小与磨损、喷油嘴积碳卡住、皮带松动、火星塞高压线松动造成单缸失火等现象时引擎振动的变化，本文采用短时傅立叶转换之时-频分析。

FDE based on Fast Fourier Transform/Inverse Fast Fourier Transform carries out single-tap equalization on received signal, moreover, its complexity is much lower than its time-domain counterpart.

基于FFT/IFFT变换的频域均衡算法，可以将均衡器简化成单抽头的结构，复杂度大大低于时域均衡算法。

The modal testing measures the frequency call function of test points on scatter-gun and recognizes the step modal parameters by single point momentary stimulation and multi-points measuring.

全枪模态试验通过单点瞬态激励、多点测量方法，测出机枪上各测点的频响函数，识别出机枪的各阶模态参数。

The control signals of the PWM rectifier are obtained by comparing the current of AC side with triangular wave (or saw-tooth wave) directly, which can implement the steadiness of the voltage of DC side and unit capacity factor of the system. At the same time, harmonic component of the system is abstracted through Instant Reactive Power Method, which can be smoothed by Integrated Learning Boost Converter Control.

本文采用重复学习Boost变换技术，利用滑模变结构控制技术对单相PWM整流器恒频Boost变换进行了分析，提出将交流侧电流直接与三角波相比较得到开关控制信号的方法，实现直流电压恒定不变及系统单位功率因数；同时，利用瞬时无功功率法分析系统谐波，并在谐波域内使用重复学习的控制方法，结合Boost变换技术，有效滤除系统谐波有功电流。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷