This paper has analyzed the performance of PPM and PAM under frequency dependence channel model, the results have shown that the PAM is better than the PPM in frequency dependence channel.
文章分析此类信道模型下脉冲位置调制和脉冲幅度调制的性能，结果表明，在频率依赖性信道中PAM调制优于PPM调制。
According to the requirements of synchronous speed control of series conveying belt, several patterns which could realize the synchronous speed control under frequency conversion was analyzed.
针对多级胶带输送机同步运行要求，分析了胶带机变频拖动同步运行实现的几种模式。
During the design of under frequency load shedding (UFLS) schemes, some simple models for frequency dynamics analysis are obviously inadequate since they do not take system voltage into account.
进行系统低频减载方案设计时，简单的频率响应模型由于未考虑系统电压对频率过程的影响而导致不少情况下无法适用。
The places are shown under different tabs based on permissions and frequency of access.
位置根据权限和访问的频率，显示在不同的附签下。
The project also included an update of the interface units for the F-35 radio frequency test system.The test system reflects how the system would operate under real-world conditions.
项目还将升级F - 35无限频率测试系统的接口单元，该测试系统主要反映系统如何在真实环境下作战。
The project also included an update of the interface units for the F-35 radio frequency test system. The test system reflects how the system would operate under real-world conditions.
项目还将升级F-35无限频率测试系统的接口单元，该测试系统主要反映系统如何在真实环境下作战。
It is said the magic cellphone ringtone, with a frequency of above 8000hz, can only be heard by people under the age of 25, whose hearing of high frequency sounds have remained unimpaired.
这种铃声的频率在8000赫兹以上，据说只有25岁以下的人能听到，因为青少年的高频听力还没受损伤。
In the case of this beer poll, the expected frequency under the null hypothesis is the following.
在这个啤酒欢迎度民意测验的示例中，在虚假设条件下的期望频率如下。
Under the new law, then, you could visit a psychiatrist with the same frequency with which you visit your ENT and receive the same level of reimbursement in each case.
然而根据新法，你可以看精神病医师的次数和看眼睛、鼻子和喉咙的次数一样多，而且每次看完之后可以享受同样的报销水平。
That used to be a simple device, working like a radio-frequency identification tag when it passes under a gantry on a toll road, but it is also getting smarter.
以往这个车载单元只是一个简单的装置，当车辆通过收费公路入口处时，这个装置就起到了一个无线电频率身份识别标签的作用，但这个装置也开始实现智能化了。
It is for telemetering the vibration frequency, dynamic stress and temperature of turbine blades under dynamic state.
用于涡轮机叶片在动态状态下对其振动频率、动应力和温度进行遥测。
For fixed damping and fixed excited frequency the motion of the beam under small amplitude of force is periodic, but becomes chaotic through period doubling bifurcation with increase of the force.
对固定的参数激励频率和阻尼，当参数激励幅值较小时梁的运动是周期的，但大幅值激励会使运动通过倍周期分岔变为混沌。
For washing frequency, under normal circumstances, the best car once a week.
对于洗车频率，一般情况下，一周洗一次车最好。
A symbol timing algorithm for orthogonal frequency division multiplexing (OFDM) systems with the cyclic prefix under wireless channels is proposed.
提出了一种新的无线信道下基于循环前缀的正交频分复用系统符号定时同步算法。
For high frequency, or low amplitude measurement, probe ground shall be connected to appropriate points in the circuit under test.
对于高频或低幅值测量﹐探头的地应接到测试电路中的适当位置。
Only little differences in the frequency range under 1 MHz at different current peak values (Fig. 14 and Fig. 15) can be noticed except from some resonance frequencies.
除了几个谐振频率，在1兆赫兹以下的频带，干扰信号在不同峰值电流下测试出来的结果仅有微小的差别(图14和图15)。
According to data provided by doctor, under the assumption that sample is normal, performed frequency analysis, pair test and variance analysis.
针对医生提供的数据，在样本服从正态分布的假设下，进行了频数分析、配对检验和方差分析。
Under the frequency of resonance, small particles which are in the bottom of an upright standing wave tube will rise and move to the node, or loop planes, and keep suspending there.
竖直放置的驻波管在共振频率下，位于其管底的微小颗粒群会在一定声压级下产生悬浮现象，即腾空而起，悬浮在波幅波节平面。
Under proper vibration frequency, difference between diameter of microcapsules is less than 10%.
在适当的破碎频率下可以得到粒径偏差小于10%的微球。
But both of them are sensitive to carrier frequency shift, further, they have comparative BER under AWGN and Doppler shift environment.
但两者都对载波频率偏移敏感，且在AWGN和多普勒频移环境下表现相当。
Rear suspension system under light load has higher supporting frequency than under deadweight.
而后悬架系统在轻载荷下较之重载荷时具有较高的支承频率。
The accelerometer also has better frequency response under the resonant frequency.
检波器在共振频率以下亦有较好的频率响应。
The value of the skew distribution under corresponding frequency was obtained through one-to-one transform.
然后通过一一变换转换成原偏态分布对应频率的设计值。
Even under low frequency, residual loss exists still.
在低频率段，仍然存在剩余损耗。
Simulation shows the algorithm has good results in case of estimating single frequency, multiple frequencies and changing frequency under different SNR, and has robustness for noise inference.
仿真结果表明，该方法对于单频、多频和频率变化等情况均具有较好的估计结果，且对于噪声干扰具有较强的鲁棒性。
The characteristics of the TO70XX series SAS OEFS under power frequency are measured, and the procedures used in power frequency electric field measurement with TO70XX series sensors are recommended.
测定了TO 70XX系列单屏蔽传感器工频下的输入输出特性曲线，给出了将TO 70 XX系列单屏蔽传感器应用于实际工频电场测量的方案。
The characteristics of the TO70XX series SAS OEFS under power frequency are measured, and the procedures used in power frequency electric field measurement with TO70XX series sensors are recommended.
测定了TO 70XX系列单屏蔽传感器工频下的输入输出特性曲线，给出了将TO 70 XX系列单屏蔽传感器应用于实际工频电场测量的方案。
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