频率函数

Ding J%Song D%Yang R Further research on application of probability weighted moments in estimating the parameters of the Pearson type three distribution Water Resources Research , 1989,null

马秀峰 计算水文频率参数的权函数法水文， 1984，(3)刘光文皮尔逊Ⅲ型分布参数估计水文， 1990，4

Because of the collective modulation of the periodic dielectric distribution to the incident electromagnetic waves, the directions of the group velocity and the phase velocity can be opposite, a photonic crystal slab can work as a negative refractive-index material.

由于介电函数的周期性分布对入射光的调制作用，使得特定频率区域的入射光在光子晶体中传播时的群速度方向和相速度方向相反，因而使得光子晶体平板表现出负折射特性。

The effects of frequency, amplitude and time of vibration on permeability were analyzed by using this function.

利用该函数，分析了振动频率、振幅和时间对渗透率的影响，并将其推广到实际地层。

After the dynamic response of radial displacement had been obtained in the S2 simply supported condition, the effects of winding angle and thickness on the radial displacement were discussed. By setting the displacement functions as complex Fourier series at the perturbed state, the perturbed motion equations were deduced to a set of Mathieu equations.

对扰动状态的非轴对称变形，位移函数采用复Fourier级数形式，得到了Mathieu形的扰动方程，由此给出了临界载荷和固有频率。

Projectors and monitoring hydrophones are placed n a chamber along its length. The projectors are driven By the required drives that are calculated aceording to a measured transfer matrix, and amplitude, frequency and incident of the predicted plane wave. Then the acoustic pressure field distribution which is equivalent to the predicted plane wave of any incidence is set up in the chamber. A prototype calilbration system has been developed.

在管中沿管轴方向布置一系列发射换能器和监测水听器，根据实测得到的传递函数矩阵和所要模拟的平而波频率、幅度和入射角计算得到一组发射换能器驱动信号的幅度和相位，然后以此信号激励每个发射换能器，就能在管中形成一个等同于任意角度入射的自由场平面波声场的声压分布。

Based on full-probability, a new solving method for probability density of natural frequency of a stochastic truss is proposed.

对随机桁架固有频率的概率密度函数提出了一种求解方法。

To assess the frequency of wind speeds at a particular location, a probability distribution function is often fit to the observed data.

评估的频率，风速在特定的位置，一个概率分布函数往往是适合的观测数据。

The transfer function of the LLC resonant converter can be obtained by using the circuit impedance, ratio of resonant inductance, and quality factor. With proper selection of the resonant tank and modulation of the operation switching frequency, the proposed circuit can achieve zero voltage switching, stabilize the output voltage, and then reduce the switching loss.

其后级之半桥LLC谐振式转换器藉由推导电路阻抗、谐振电感比例值与品质因数得到转移函数，以及利用适当的谐振电路的设计与切换频率的调变的方式达到输出电压稳定，并且令功率开关具有零电压切换之功用，以降低功率开关的切换损失。

Represents a random function with a particular frequency distribution.

表现一个具有特别频率分配的随机函数。

The frequency response of recording devices is a function of the relative speed of the recording medium past the head.

记录设备的频率响应是上述记录媒质经过磁头的相对运动速度的函数。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。