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- The Design of an Ultrasonics Doppler Spectrum Analysis System for Fetal Umbilical Blood Flow Monitoring 胎儿脐带血流超声多普勒频谱分析仪的研制
- Doppler spectrum analysis 多谱勒频谱分析
- Provides an FFT class for doing spectrum analysis. 提供了一流的FFT算法做频谱分析。
- The professor took a spectrum analysis in class. 教授在课堂上做了一次光谱分析。
- Description: Spectrum analysis of the motor torque friction. 描述：摩擦扭矩频谱分析。
- The energy centrobaric method is made use of correcting the Doppler spectrum, the simulation predicted value of the target velocity is obtained. 用能量重心校正法对多普勒频移校正，进而得到物体的运动速度的模拟计算值。
- Conclusions:The Doppler spectrum of CFV in moderate and severe TR group is characteristic with high atrial reversal velocity and long duration. 中、重度 TR组 CFV血流频谱受呼吸运动的影响减低 ; Va与 TR程度显著正相关 (r=0 .;92 3;P<0
- Results:The blood flow was abundant around the cancer tissue.The color signal of blood flow showed garland-like or punctate.The feature of its Doppler spectrum was o... 结果:前列腺癌周边血流丰富,彩色血流信号呈花环状或点棒状,多普勒频谱测值为高阻力指数特征。
- German physicist noted for his research in spectrum analysis,optics,and electricity. 基尔霍夫，古斯塔夫·罗伯特1824－1887德国物理学家，以他对光谱分析，光学，和电学的研究著名
- The NIMA Method for Improved Moment Estimation from Doppler Spectra. 从多普勒光谱进行的改进瞬时评估的NIMA方法。
- The suggestions on the further research of the frequency spectrum analysis are provided. 就频谱分析的进一步研究提出了建议。
- Objective:To detect the characteristics of Doppler flow spectrum of common femoral veins(CFV) in patients with tricuspid regurgitation(TR) and to determine the relation between Doppler spectrum and the degree of TR. 目的 应用多普勒超声技术检测三尖瓣返流 (TR)患者的股总静脉 (CFV)血流频谱 ,探讨频谱形态与 TR程度的关系。 方法 TR患者 6 5例 ,轻度 2 8例 ,中度 2 0例 ,重度 17例。
- Venation wave spectrum analysis finds out shape-structure change of mid-frequency signal fluctuation. 脉络波谱图分析查明了中范围（频率）信号波动的形态结构变化。
- In PAH group, the mitral valve orifice blood streams, the AV of Doppler spectrum,the velocity-time integra and AV/EV, AVI/EVI were all increased significantly compared with the control group (P<0?01). PAH组与对照组比较;二尖瓣口血流多普勒频谱A峰流速(AV)、速率时间积分(AVI)及肺动脉压与二尖瓣口血流频谱比值(AV/EV);AVI/EVI均逐渐明显增大;差异均有显著意义(P<0.;01);
- The properties of thecatalysts have been examined using XRD; SEM, BET . Energy spectrum analysis, etc. 采用了XRD、SEM、BET比表面积测定以及能谱等手段对催化剂的性能进行了表征。
- Methods Left ventricular stroke volume (LVSV) in 36 healthy volunteers were measured by RT-3PE, M-mode Teichholz, two-dimensional echocardiography (2DE) simpson method and the product of aortic flow Doppler spectrum integral and aortic valvular area. 方法应用RT-3PE测量36例正常人的左室每搏量(LVSV),并分别与M型Teichholz法、二维超声心动图Simpson法、多普勒主动脉瓣环血流量法所测的LVSV进行比较。
- The result that(FCO)2 have trans-and cis-conformers are consist with spectrum analysis. 得到了与光谱分析一致的结果,草酰氟分子有平面反式和顺式2种构像。
- Missile acceleration dominates echo Doppler spectrum broadening, hereby a single/multiple target discrimination method using the super?resolution spectrum estimation after signal de?chirping is put forward. 导弹加速度对目标回波多普勒频谱展宽起主要作用,据此提出了去斜率后进行超分辨谱估计的单/多目标鉴别方法;
- German physicist noted for his research in spectrum analysis, optics, and electricity. 基尔霍夫，古斯塔夫 罗伯特1824－1887德国物理学家，以他对光谱分析，光学，和电学的研究著名
