frequency的例句大全

Error voltage vector generated by dead-time, switching devices turn-on and turn-off time are introduced. Weakening methods that consist of decreasing carrier frequency and decreasing direct current bus voltage are educed.

给出因死区时间和开关器件开通、关断时间引起的误差电压矢量，依据误差电压矢量的表达式，采用降低载波频率和减小直流母线电压的方法削弱死区效应。

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Small dissipation factor at high frequency.

高的频率和小的损耗因素.

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Moreover, warming increased the frequency of second-generation larvae in East Mongolia, East Inner Mongolia and Chita of Russia, further leaving a large number of overwintering cocoons. 9.

同时，气候变暖还增加了蒙古国东部、内蒙古东部和俄罗斯赤塔州二代幼虫发生频率，进而留下大量越冬虫茧。

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From the phase balance condition and the effect of the partial energy of the quartz crystal resonator, the paper studies the factors which influence the frequency stability of the sensor, and analyzes the problems in designing the liquid sensor head.

本文从分析液体中石英晶体谐振器的相位平衡条件出发，研究了影响传感器频率稳定度的因素；

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The phase balance of the central frequency can ensure the accuracy of the correlation phase, and the residual phase error will only reduce the coherency.

实现信道中心频率的相位精度就可以保证干涉相位的精度，而通道内的残余相位差只会引起干涉相关度的降低。

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Through model parameter estimation, the activation energy and frequency factor of sulfide oxidation reaction, the phase balance constant for solvent extraction were determined by use of experimental data of diesel desulfurization.

利用脱硫实验数据进行模型参数估值，确定了硫化物氧化反应活化能及频率因子、溶剂萃取相平衡常数等模型参数。

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The synchronization system of Frequency-Hopping ( FH ) station requires well anti-jamming and security performance and quick synchronization.

跳频电台同步系统要求具有良好的 抗干扰性能 和保密性能,同时达到快速同步.

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The frequency of F4 roller chatter mark is 78 Hz, which is caused by stand horizontal resonance vibration.

F4轧辊振纹频率为78Hz，是由机座水平系统共振造成的；

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The frequency of the test tone was 300 Hz.

测试声为300赫.

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In the L8 ( 2 7) orthogonal test, six factors considered were as follows: lubricating oil, condenser thickness, fan diameter, angle of fan vane, frequency of fan electromotor and environment temperature.

通过L8（27）正交试验，对压缩机所用润滑油的种类、冷却器的散热面积和厚度、风扇直径、扇叶角度、风扇电机频率以及环境温度6个因素进行了正交试验研究。

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Finally, the fundamental frequency estimation under different PQ disturbances condition , such as harmonics , voltage.

提出了一种电能质量干扰环境下的电力系统基本频率估计方法.

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Start the engine, when the voltage and frequency reach to normal value, close the ACB.

当一台发电机启动, 电压和频率达到额定值后, 将主开关“ACB”和闸即可.

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Up to now, the optimal BMS in the international actuarial literature only consider the frequency of the claims in a year and ignore the amount of the claim, which means the punishment for small and large claims are treated equally.

直到目前，国际精算文献中研究的最优BMS，只考虑投保人上一年的索赔次数，没有考虑索赔额的大小，也即对于小额损失和大额损失的惩罚是一样的。

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Variable frequency control ventilation system in the underground garage based on chip microprocessor

基于单片机的地下停车场变频通风控制系统

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Correlation between annual frequency of typhoon formed on South China Sea and the surface sea temperature in the North Pacific Ocean

南海形成的台风数与北太平洋SST关系分析

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The resonant solution on forced oscillation of A2B model is given and the modes of vibration on resonant frequency are discussed.

给出了A2B模型受迫振动的两个共振解，讨论了共振频率下的振动模式。

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After treatment of the test group, the acoustical parameters maximum phonation time ( MPT), frequency perturbation quotient ( FPQ), amplitude perturbation quotient ( APQ), ratio of harmonic to noise ( H/ N) objectively reflected improvement of voice quality.

试验组患者治疗前后的声时、频率微扰商、振幅微扰商、谐噪比声学参数也客观地反映了治疗后嗓音质量的提高。

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It also incluses a phase locking loop ( PLL ) simulation used for frequency tracking of CMF.

还包括用于频率跟踪的锁相环仿真,锁相环可以极好地平滑噪声,跟踪频率变化,最终用于计算两路信号相位差.

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Then detailes analysis and description all the important part of electromagnetic stirring system, including EMS, low voltage frequency converter, cooling water systema and so on.

然后对电磁搅拌系统的各个重要组成部分的设计进行了详细的分析和说明，其中包括电磁搅拌器、低压变频电源、冷却水系统。

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Development of Pest Control in Grain with High Frequency Dielectric Method

高频介电在粮食防虫中的应用研究进展

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