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1.THEORY AND PRACTICE OF SIGN BIT FAST CORRELATIVE VELOCITY SPECTRUM
符号位快相关速度谱的原理与实践收藏指正
2.Since there are usual abnormal values in velocity spectrum data, rejecting the abnormal value can enhance the precision and reliability of velocity spectrum data and is beneficial to practical uses.
速度谱数据中通常存在野值 ,剔除其野值可提高速度谱数据的精度和可靠性 ,有利于实际利用。收藏指正
3.The ratios of mitral valvular ring motion velocity for evaluating the left ventricular diastolic function by DTI is better than those of the conventional mitral flow velocity spectrum.
结论 慢性阻塞性肺病会引起左室舒张功能异常,DTI技术检测二尖瓣环运动速度之比评价左室舒张功能优于二尖瓣口血流流速曲线。收藏指正
4.Based on wind velocity spectrum generated by CAWS method,the dynamic response of tower is computed by ANSYS software. Thus the wind-reduced displacement response,force response,acceleration response. are all acquired.
建立电视塔的风振内力响应计算有限元模型,基于谐波合成法数值生成电视塔各分段的风波时程,采用ANSYS结构分析程序数值计算各风偏角下结构的动力响应,确定该电视塔不同高度上的风致振动位移响应、内力响应,给出了基于位移等效的动力放大系数与基于内力等效的动力放大系数。收藏指正
5.In this paper the fluctuating spectrum and its spectral width are estimated by fast Fourier transformation of the discrete sample of precipitation echoes at a specified position with a microcomputer(Apple Ⅱ) connected with a home-made incoherent weather radar 713. Based on the relation between fluctuating spectrum and Doppler spectrum, calculation has been performed for the width and shape typical of the Doppler velocity spectrum, which are very useful in meteorology.
本文在国产的非相干的713天气雷达上,对某一固定地点的降水回波进行了离散取样,应用微机(APPLE.Ⅱ)对所获取的离散样本作傅立叶变换(FFT),得到回波强度的涨落谱和谱宽。 然后根据涨落谱与多普勒谱之间的确定关系,计算出在气象上非常有用的多普勒速度谱宽和典型的多普勒谱形。收藏指正
6.On the R-meter principle proposed by W. Rutkowski and Flei-sher (1955), the Doppler velocity spectrum parameter σ. is extract-ed from the fluctuating echoes observed by a conventional weatherradar (radar 713) and displayed in pseudo-color on a microcomputer.
本文根据Rutkowski,W和Fleisher(1955)提出的R计原理,从常规天气雷达的涨落回波中提取了多普勒速度谱宽σ_v并在微机上获得谱宽的伪彩色PPI显示。收藏指正
7.The data of drilling,logging,3D seismic and velocity spectrum were used to simulate the stress field,pressure field and fluid potential field of Archaean buried hill oil pool of Zhuanghai area in Shengli Oilfield with the finite element method,Fillippone method and Hubbert method. The characteristics of dynamic fields and the relationship between dynamic fields and hydrocarbon accumulation were analyzed.
利用钻井、测井、三维地震及速度谱资料,分别采用有限元法、Fillippone法和Hubbert法模拟和研究了胜利油田桩海地区太古界潜山油藏应力场、压力场及流体势场的特征,并分析讨论了其与油气聚集之间的关系。收藏指正
8.The 3D anti 3C seismic processing flow established is used in processing of the real seismic data, achieving high quality velocity ratio spectrum and good non-hyperbolic NMO correction and stacking of 3D converted wave.
应用所建立的三维三分量地震资料处理流程，对某实际地震资料进行了处理，得到了较高质量的三维转换波速度比谱，转换波非双曲动校正和叠加取得了较好效果。收藏指正
9.The results showed:when the θ angle increased,the uncorrected veloci-ty on Doppler flow spectrum(VD)decreased,but not accorded to cosθ law,so there were great differences between he actual mean flow velocity and the corrected velocity on Doppler flow spectrum(VDc)measured on dif-ferent angles; both the VD and the VDc were much higher than VR.
结果表明：当θ角增大时，未校正的多普勒流速值并不按cosθ规律下降，因此，对同一实际平均流速在不同角度测得的多普勒流速值经角度校正后相差很大，并且未校正的多普勒流速与校正后的多普勒流速都高于实际流速。收藏指正
10.Methods In 35 patients with degenerate valvular regurgitation disease and 20 normal cases, multiplane TEE examination was performed to obtain coronary flow velocity (CFV),coronary flow frequence spectrum,heart rate (HR),diastolic peak flow velocity (PVD),mean flow velocity (MDV),flow velocity integral (DVI) in rest and after dipyridamole injected.
方法　对主动脉瓣返流组 (轻度 2 0例、中度 15例 )及正常对照组 2 0例静脉注射潘生丁 ,分别测量静息状态 (rest)及注射潘生丁后 (DPM )冠脉血流频谱 ,舒张期峰值流速 (PDV)、平均流速 (MDV)、流速积分 (DVI) ; 记录心率 (HR ) ;收藏指正
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