A new harmonic analysis method for electric power systems based on triangle basis functions neural network was presented , the convergence theorem of the algorithm was proposed , and a window function and interpolation algorithm were employed to correct the frequency of fundamental waves 摘要提出了一种新的基于三角基函数神经网络的电力系统谐波测量方法，给出了该神经网络算法的收敛定理，并采用加窗插值算法修正基波频率的准确度。
This paper presents that the directional spectra and the reflection coefficients of the oblique and the multidirectional irregular waves on the co - exist wave field of incident wave and reflected wave have been studied . a modified two - points method is proposed that can be used to calculate the frequent spectrum and reflection coefficient of the oblique waves . for the multidirectional irregular waves , the directional spectra and reflection coefficients are obtained by the modified bayesian directional method and the modified maximum likelihood method 本文研究了入、反射波共存场中斜向不规则波和多向不规则波波浪场的方向谱和反射系数，对于斜向不规则波频率谱及反射系数的计算提出了一种改进两点法( mtpm ) ，对于多向不规则波方向谱和反射系数的分析，应用了改进的贝叶斯方法( mbdm )和改进的最大似然法( mmlm ) 。
Delta brain waves are those with the lowest frequencies and relate to the unconscious mind . delta waves are present during deep sleep , even when the other types of brain waves are not detectable , but they may also be present in the waking state , combined with the other types . they are associated with highly instinctive , intuitive , and empathetic states of mind 波频率最低，它构成了无意识，波出现于其它类型的脑波测不到的深睡眠期，也出现于与其它类型的脑波相混合的清醒状态它与高度本能直觉和同一体等心灵状态相关。
On the basis of traditional chinese medicine channels and collaterals study and bionics , the e - mini cpu underwear adopt the technology of the digital medical treatment to make especially , the magnetized wave of the e - mini cpu underwear can adjust the endocrine and ultimately stimulate the growth of the breast cell in the milk to make you have the beautiful breast without any side effect occurred by the operation . the magnetized wave repeatedly massage and stimulate on the breast , with promotion the blood circulation in the breast , and providing the sufficient nutrition to the breast to make the breast develop secondly E -美人微电脑纳米美胸宝主机所产生的生物磁频波能调节人体内分泌，产生胸部肌肉运动，加速乳房血液循环，刺激卵细胞的促乳素，进而乳素中脂肪细胞的生长和增大，她所产生的磁频波频率对乳房产生反复的调节和协助运动，充分调动您自身的生理潜能，促进乳房的血液循环，为乳房提供充足的营养，加强乳房的代谢，让乳房健康成长刺激乳头，促使体内产生高水平的荷尔蒙女性激素，激活休眠细胞，启动乳房组织二次发育。
According to the characters of the power harmonic , a kind of self - adaptive harmonic detection method based on in - phase correlation filtering is presented , which is clear and concise in thinking . by this method the low - pass filter can be designed easily , and by using the multiresolution and self - adaptive technique the difficulties of harmonic detection with low variable fundamental frequency and no voltage reference are worked out , which contributes much to the implementation of harmonic suppression 该方法思路清晰、简洁，并能方便有源滤波器( apf )中低通滤波器设计，同时采用多分辨率和自适应滤波方法，解决了基波频率低且变化、无明显电压基准可寻的复杂供电系统谐波检测的难题，为谐波抑制的实施奠定了基础。
The influence of msfvw bandwidth on the diffraction efficiency is also considered . for the nonuniform bias magnetic field of u - type parabola profile , when the msw frequency is less than the cut - off frequency at the edge of mo film , the effective mo interaction length reduces . the edge cut - off frequency is determined by the maximum of the nonuniform field 对于抛物型分布(开口向上)的偏置磁场,当激发静磁波的rf频率小于边缘截止频率时,磁光作用的有效长度减小(与静磁波频率有关) ;边缘截止频率由不均匀磁场的最大值决定,静磁波的下限截止频率由不均匀场的最小值确定。
A patch antenna with etched holes on the ground plane is also studied . the performance of the antenna at the resonant frequency is analyzed by using the fdtd method together with the pml boundary treatment . the results show that the surface waves are suppressed greatly , the bandwidth is improved and a 1 odb reduction on the sidelobe level is achieved at the 110 and 260 directions in the e plane 全面地研究了地面腐蚀周期圆孔结构的电磁晶体贴片天线在基波频率处的性能，用fdtd方法并结合pml边界处理技术对该天线所取得的研究结果显示，本文设计的地面腐蚀型电磁晶体结构抑制了贴片天线中的表面波，增加了天线的带宽，并有效地削弱了旁瓣，使天线的e面方向图上110和260方向的两个旁瓣被削弱了10db 。
