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changing frequency     
相关语句
  变频
     NLO changing frequency technology of laser
     NLO激光变频技术
短句来源
     Constant Pressure Water Supply System with Changing Frequency and Speed Abilities Base on S7—200
     基于S7—200的变频调速恒压供水系统
短句来源
     Design of Constant Pressure Water Supply System with Changing Frequency and Speed Abilities Base on PLC
     基于PLC的变频调速恒压供水系统的设计
短句来源
     Through setting the appraisal system of dynamic-respond character for nonlinear forced vibrating system,this paper appraised the dynamic-respond character of starting,changing frequency and changing amplitude of vibrating equipment or vibrating system used in industry.
     本文通过建立非线性强迫振动系统的动态特性评价体系,实现对工业应用振动设备或系统的起动、变频、变幅等过渡过程的动态特性评价。
短句来源
     ADAPTIVE CONTROL FOR ASYNCHRONOUS MOTOR CHANGING FREQUENCY SPEED REGUIATION SYSTEM
     异步电动机变频调速系统的自适应控制
短句来源
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  变化频率
     the other for dynamic data needed by each sub module which is temporarily produced and has high changing frequency.
     而另一部分主要是各个子模块自己需要的动态数据,是由业务临时产生的一些数据,变化频率较高,实时性要求较高。
短句来源
     This paper introduces the operating principle of PLC, then from the point of the PLC operating principle, it discusses the problem of logic equivalence between relay circuit and PLC ladder diagram, and the releationship between changing frequency of inputting pulse.
     笔者介绍了PLC的工作原理,然后从PLC工作原理的角度,讨论了继电器电路与PLC梯形图的逻辑等效性问题,和输入信号变化频率与扫描周期的关系,并给出了PLC输入脉冲的最高频率计算方法。
短句来源
     By selecting fiber grating with appropriate Bragg wavelength,utilizing the linear region of fiber loop mirror to realize wavelength filtering,and detecting the changing frequency of the output optical intensity,the frequency of vibration source can be obtained.
     选择适合Bragg波长的光栅作传感FBG,用光纤环镜的线形区对其反射谱进行滤波,检测输出光强的变化频率即可得到振源的频率。
短句来源
     The data of MSC Server are divided into two parts: one for depositing the data of data base, generally the properties of some equipments and some other public data whose changing frequency are not so high;
     MSC Server的数据主要分为两大部分,一部分是存放在内存数据库中的数据,一般存储一些设备的属性和其他的一些公共数据,变化频率相对不是很高;
短句来源
     when the dynamic changing frequency of vehicle equal or approach to the free vibrational frequency of bridge, which will make the resonance may intensify the response of bridge and vehicles.
     当列车的动力变化频率与桥跨结构自振频率相等或接近时,引起的共振可能会使车桥动力响应加剧。
短句来源
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  频率变化
     Three kinds of modulator were used: continuous or burst sinusoids of fixed frequency (in the range of 40 Hz ~ 5 kHz),short bursts of sinusoids with changing frequency and short segments of speech signal.
     所用的调制波有三种:频率固定的连续或短段正弦波(频率范围40Hz-5kHz),频率变化的短段正弦波及小段语音信号。
短句来源
     For burst modulators of changing frequency, r varied around 0.66 ~ 0.86. When segments of speech signal served as the modulators, significant correlation (r around 0.50 ) also existed, indicating the validity of the timing mode of information encoding for speech sound at the cochlear nerve level.
     对于频率变化的短段正弦调制波,r在0.66-0.86之间变化。 当用语音信号片段作调制波时,反应与调制波之间仍存在一定的相关性(r在0.50左右变化),表明对语音信息在耳蜗水平的编码,时间模式是有效的。
短句来源
     Simulation shows the method has good results in case of estimating single frequency, multiple frequencies and changing frequency under different signal-to-noise ratio, but the noise influences the estimation accuracy and rate to some extent, and the tracking effect is poor.
     仿真结果表明,该方法在不同信噪比下对于稳定的单频、多频信号和频率变化信号具有较好的估计结果; 噪声干扰在一定程度上影响频率的估计精度和估计速度。
短句来源
     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。
短句来源
  改频
     Research of 2 GHz microwave equipment changing frequency in Anhui electric power
     安徽电力2 GHz微波设备改频技术研究
短句来源

 

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      changing frequency
    It involves the maximum likelihood estimation of parameters for two logistic regression models: one which assumes that fitness is frequency-dependent, the other that fitness is constant over changing frequency.
          
    The Daphnia population of lake El Tobar is known to be clonally diverse, and the changing frequency of genotypes could play an important part in the observed seasonal differences in behaviour and size.
          
    The changing frequency of dust storms through time
          
    Vibrogram of the head obtained by the application of mechanical sinusoid oscillations of continuously changing frequency
          
    Colorectal carcinomas: Diagnostic implications of their changing frequency and anatomic distribution
          
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    At present the m oncchromatic coherent light achieved by using NLO changing frequency technology of laser has already civered the region from UVU to FIR.In this alticle we have reviewed the materials and methods which have been used in those changing frequency technologies.

    当前利用非线性光学(NLO)效应的激光变频技术获得的单色相干光已能覆盖从真空紫外(100nm)到中远红外(n+μ)的整个波段。本文评述了用于这一系列变频技术的材料和主要手段。

    A new method for measuring resistivity of high resistance compound,which may be cal-led the Changing Frequency Method, has been proposed.At two different frequencies measur-ing the AC current and at the same time keeping the AC voltage constant, resistivity can beeasily determined.The merit of this method is that there is no need to make ohmic contacts.Results presented show that this method is reliable.

    本文报道一种测量高阻化合物电阻率的方法,即变频法.

    The internal friction behavior in a CuZnAl shape memory alloy underequilibrium condition has been studied by a vaccum Kē-pendulum.It has beenfound that there are two peaks at about 240℃ and 345℃ separately in therange of room temperature to 500℃ (f=1.7Hz).The relaxation activationenergy of 240℃ peak was measured to be 27kcal/mol,and that of 345℃ peakto be 42kcal/mol by changing frequency.The values of τ_0 with the two peakshave been calculated.The peak Observed at 345℃ was determined as Zenerrelaxation...

    The internal friction behavior in a CuZnAl shape memory alloy underequilibrium condition has been studied by a vaccum Kē-pendulum.It has beenfound that there are two peaks at about 240℃ and 345℃ separately in therange of room temperature to 500℃ (f=1.7Hz).The relaxation activationenergy of 240℃ peak was measured to be 27kcal/mol,and that of 345℃ peakto be 42kcal/mol by changing frequency.The values of τ_0 with the two peakshave been calculated.The peak Observed at 345℃ was determined as Zenerrelaxation peak in a phase and the peak at 240℃ was attributed to the move-ment of point defects around anti-domain boundary in β ordered phase.

    用真空葛氏扭摆研究了 CuZnAl 形状记忆合金平衡状态试样的内耗。在室温至500℃温度范围内,观测到两个弛豫型内耗峰,峰温分别为240℃和345℃(f≈1.7Hz)。通过改变频率测得240℃峰的弛豫激活能为27kcal/mol,345℃峰的弛豫激活能为42kcal/mol。计算了两个峰的τ_0值,确定345℃峰为α相中 Zener 弛豫峰,240℃峰则是由β有序相内反向畴界某种点缺陷运动所产生。

     
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