The upper frequency limit and some factors affecting noise output power of microwave solid state noise diodes are discussed.
讨论了微波固体噪声二极管使用频率的上限和影响噪声输出功率的因素。
Due to the quantization of electromagnetic fields there is an upper frequency limit in the spectrum of any finite energy transmitted by an electromagnetic system.
由于电磁场的量子化效应，电磁系统发射有限能量的电磁场，其频谱必有一高频率上限。
However, extending the upper frequency of such function signal generator is limited by the read-out time of the memory and the conversion rate of the digital-to-analog converter.
可是，这种信号发生器的上限频率的提高受存储器的读取时间和数模转换器的转换速度的限制。为了提高数字法函数信号发生器的上限频率，我们提出了用分布存储式数字法生成函数信号。
These show that vegetation dam can reduce starting drag force and starting frequency of sediment in upper reaches. And can make athletic sediment deposit.
说明植物坝可以减小泥沙的起动拖曳力，降低上游泥沙的起动频率，并能使运动的泥沙在坝上游沉积下来。
Upper UTI or acute pyelonephritis often presents with fever, chills, flank pain, and varying degrees of dysuria, urgency, and frequency.
上尿路感染或急性肾盂肾炎经常出现发热、寒颤、腰部疼痛和不同程度尿痛、尿急和尿频。
The DLS magnetic separator is mainly composed of high frequency vibrating mechanism, ring, exiting coils, upper and lower yoke and varies ore buckets, water supplying devices.
磁选机主要由高频振动机构、转环、励磁线圈、上下铁轭及各种矿斗、供水装置等组成。
By study the upper situation, we have the following conclusion: the frequency distance of TD-SCDMA and WCDMA should be 5mhz, frequence disposition should like FIG.
通过对几种情况的分析计算，可以得出以下结论：TD - SCDMA的频率间隔同WCDMA一样均应为5mhz，频率配置如图所示。
The first nature frequency of the structure improved 35.7% and the second and upper nature frequencies of the structure improved over 63% after the optimum design.
最后对结构进行了优化设计，优化后结构一阶固有频率提高35.7%，二阶以上固有频率提高63%以上。
Finally, it presents some advice and Suggestions for the repairing and strengthening method of fatigue crack of upper part of steel crane-girder in the high-frequency.
最后就重级工作制钢吊车梁上部区域出现疲劳裂缝的修复与加固方案提出了一些意见和建议。
According to wave motion theory, finite element mesh size satisfying the needs of engineering calculating precision is relevant to the upper limit of frequency range of random (response) problems.
根据波动理论，满足随机响应工程计算精度要求的有限元网格大小与待求高频随机响应问题的频率范围上限有关。
As to auroral hiss, there are upper and lower frequency cut-offs.
极光嘶声则有明显的上截止频率和下截止频率。
The standing wave laser field is applied to the upper transition with the Rabi frequency dependent on the position through which the atom passes.
驻波激光场与级联原子的上跃迁耦合，其拉比频率依赖于原子通过驻波场的位置。
The system constitution is simplified by using gyrator transmission network to realize the live conversion of voltage and frequency, thus greatly enhancing the upper output frequency.
该方法利用回转器构成传输网络实现变压变频，使系统结构简化，且输出频率上限大幅度提高。
You can see the airport local time at the upper right side of the frequency box.
在频率的右上方边，您可以看到机场当地时间。
An upper gain limit (UGL) as a function of frequency is then determined based on an inverse of the global transfer function (g).
随后基于全局传递函数(G)的倒数确定增益上限(ugl)作为频率的函数。
Meanwhile, there is an upper limit existing in frequency and the peak power of response will be greatly diminished only when the frequency exceeds its critical value.
同时，激励信号存在一个上界频率，当频率参数取值超过界值时，响应峰值迅速下降。
The upper and lower caps of one elongated bubble oscillated at the same characteristic frequency (band).
同一气泡上下游界面振荡具有相同特征频率（频段）。
A preemption control model based on time slice is therefore proposed to assign every task on upper limit of preemptable frequency.
提出了一种基于时间片的抢占控制模型，为每个任务分配一个可抢占次数的上限。
In a typical setup, an upper cylinder will emit high-frequency sound waves that, when they hit the bottom, concave part of the device, are reflected back.
在一个典型的声悬浮装置中，缸体上部将发出高频声波，声波接触到底部凹面会被反射回来。
The machine comprises a high-frequency vibration draining screen in the upper part and a coal slurry buffer storage tank in the lower part.
它包括上部的高频振动脱水筛和下部的煤泥缓冲贮存罐。
Spectrum of the amplitude-modulated wave is observed by a radio frequency spectrum analyzer and amplitude values of every spectrum are recorded at the upper sideband or lower sideband.
用射频频谱分析仪观测一个已调波的频谱成分，记录上边带或下边带中各条谱线的幅度值，从而可以根据有关算式计算出调制信号（音频信号）的失真度。
The results reveal that the high value areas of the kinetic energy of low-frequency fluctuations in the upper level are closely related with the zonal asymmetry and the meridional shear of westerlies.
发现高空低频扰动动能的高值区与西风急流的纬向非对称性和经向切变关系密切。
The soil temperature under the high-frequency drip irrigation during the growing stages was lower, and cotton roots distributed mainly in the upper soil.
各生育阶段高频滴灌的土壤温度比对照低，而且根系分布浅。
Frequency and loss factor are two important indices of dynamic property of composite structures, in which the viscoelastic material is sandwiched between the upper layer and the lower layer.
频率和损耗因子是粘弹性材料复合夹层结构的两个重要的动力特性指标。
Frequency and loss factor are two important indices of dynamic property of composite structures, in which the viscoelastic material is sandwiched between the upper layer and the lower layer.
频率和损耗因子是粘弹性材料复合夹层结构的两个重要的动力特性指标。
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