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- Fundamental frequency laser 基频光
- The frequency associated with the first mode is sometimes called the fundamental frequency. 和第一振模相联系的频率有时叫做基频。
- The extinguish of arc of single-phase grounding fault is analyzed with high frequency theory and fundamental frequency theory. 本文分析了小电流接地系统弧光接地过电压的基本原理及高频熄弧理论和工频熄弧理论。
- Conclusion The results suggested the hypertrophic ventricular fold disturbed the phonation,making the fundamental frequency lower. 结论肥厚的室带可能参与发音,使基频和低音降低。
- Passing the square wave through a narrow bandpass filter centered on the square wave's fundamental frequency removes most of the harmonics. 通过一个中心位于方波基频的窄带带通滤波器,方波可以去除绝大多数谐波。
- If this film series is used in He Ne laser, the dual frequency laser with 5MHz beat will be produced. 此膜系用于氦氖激光器 ,可制出频差为 5 MHz量级的双频激光器。
- Use the Frequency Spectrum (FFT) display to measure the approximate value of the fundamental frequency of the wire on the Sonometer. 使用频谱(FFT)显示测量振动频率计上金属丝基频的近似值。
- Conclusion Doubled frequency laser 532nm is validated with low reoccurrence in treatment of CSCR. 结论倍频532激光光凝治疗中心性浆液性脉络膜视网膜病变,疗效确切,复发率低。
- At present,its main parameters are fundamental frequency,amplitude of vibration,perturbation(Jitter,Shimmer),noise spectrum(HNR,SNR,NNE),et al. 目前应用的主要参数有基频、振幅、微扰值(频率微扰、振幅微扰)、噪声谱(谐噪比、信噪比、标准化噪声能量)等。
- Depolarization loss analysis of electro-optic crystal KDP heated by repetition frequency laser[J]. 引用该论文 张君;张雄军;魏晓峰;吴登生;田晓琳;曹丁象;董军.
- Trumpeters alter fundamental frequency by modifying the lip tension and by pressing the valves to change the effective length of the tubes. 小号手可以藉由改变双唇的张力来增减基频,按下与放开活门则可以改变有效管长。
- First,it is required that the calculation of RMS of fundamental frequency component is not only accurate,but also real time. 针对电能质量指标中电压波动和闪变的计算问题,提出了一种基波有效值的快速算法。
- Abstract: Temperature and thermal stress distributions in the KDP, heated by repetition frequency laser, are given by means of finite element methods. 摘 要: 基于有限元数值方法,给出电光晶体KDP在高平均功率激光负载下温度场分布和应力场分布。
- Super high - frequency laser treatment coarsens the fracture surface and improves anti - destroying property of cladding materials. 结果表明,钢基体经高重频激光强化处理改善了原基体状态铬层断面的瓷状形貌,断面粗糙,抗破坏能力提高。
- The fundamental frequency and bass were lower in diseased group. The percentage of jitter increased and the percentage of fundamental frequency decreased with severity. 试验组的基频和低音明显降低 ,随室带肥厚程度的加重 ,微扰百分值的检出率有增高的倾向 ,而基频和低音频率则有下降的倾向。
- Results The fundamental frequency and bass were lower in diseased group. The percentage of jitter increased and the percentage of fundamental frequency decreased with severity. 结果试验组的基频和低音明显降低,随室带肥厚程度的加重,微扰百分值的检出率有增高的倾向,而基频和低音频率则有下降的倾向。
- In order to study the optical feedback characteristics at the dual frequency laser, a birefringent external cavity was studied throughboth theoretical analysis and experiments. 摘要为了研究双频激光器的光回馈特性,采用双折射外腔光回馈的方法,进行了理论分析和实验验证,取得了双频激光器中条纹倍频现象的数据。
- The percentage of jitter increased and the percentage of fundamental frequency decreased with severity.Conclusion The results suggested the hypertrophic ventricular ... 结果试验组的基频和低音明显降低,随室带肥厚程度的加重,微扰百分值的检出率有增高的倾向,而基频和低音频率则有下降的倾向。
- First, a few improvements are made to the original model, e.g. the determination of MVF value and the estimation of fundamental frequency and harmonic parameter values. 我们首先改进了原本模型的分析步骤的缺点,如MVF值的决定及基频和谐波参数值的估计;
- Objective To analyze the clinical results of doubled frequency laser with a wavelength of 532 nm in treatment of central serous chorioretinopathy (CSCR). 摘要目的研究倍频532激光光凝治疗中心性浆液性脉络膜视网膜病变的临床效果。