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脉动     
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  pulsation
     Multiple Frequencies Pulsation of the δ Scuti Variable BDS 1269 A
     δScuti型变星BDS 1269 A的多重脉动频率激发
短句来源
     Self-sustained Pulsation Characteristics of GaAlAs/GaAs DH Lasers
     GaAlAs/GaAs DH激光器的自脉动特性
短句来源
     Analyzing data observed by STEPHI in 1997 and by us using 85cm'telescope of XingLong from 2001 to 2002, we obtained amplitude spectra of V647 Tau, SAO73233, SAO54473, V650 Tau, V461 Phe and calculated their physical parameters to study their pulsation peculiarity.
     我们针对1997年STEPHI联测的数据和利用兴隆站85cm望远镜从2001到2002年观测得到的资料,得出δ Scuti型变星V647 Tau,SAO73233,SAO54473,V650 Tau,V461 Phe振幅谱,计算出变星的物理参数,研究它们的脉动特性。
短句来源
     Study and Analysis of Combustion Pulsation Phenomena of “MBEL”Based W flame Boiler
     基于“MBEL”的W火焰锅炉燃烧脉动现象研究分析
短句来源
     Analysis and verification of positive B-D experiment result for pulsation vacuum sterilization machine
     脉动真空灭菌器B-D试验阳性结果的分析与验证
短句来源
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  fluctuation
     The Analysis of the delivery fluctuation of the Z=5 and 6 Sector-slider pump
     Z=5和6扇形滑块泵流量脉动分析
短句来源
     The optimal frequency value of the area fluctuation is about 0.1-0.3 Hz.
     面脉动最优频率值一般在0.1—0.3赫范围内。
短句来源
     This paper studies the instantanious delivery, delivery fluctuating rate and fluctuation frequency of the Z=5 and 6 sector-slider pump, establishes relevant mathematical model, and provides theoretical basis for the design and calculation of the 5, 6 sector-slider pump.
     研究Z=5和6扇形滑块泵的瞬时流量,流量脉动串和流量脉动频率,建立相应的数学模型,为5,6扇形滑块泵设计计算提供理论依据。
短句来源
     PRESSURIZED FLUIDIZATION Ⅲ STUDY ON PRESSURE FLUCTUATION AND FRACTAL
     加压流态化 Ⅲ压力脉动与分形研究
短句来源
     The result shows that the fluctuation intensity of the wake flow reaches about 20%-70%.
     结果表明:叶片尾迹区脉动强度达20%~70%;
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  pulse
     The pulse index in anterior cerebral artery was correlated with systolic pressure and pulse pressure(r=0.338,0.353,P<0.05),and that in middle cerebral artery only with pulse pressure(r=0.220,P<0.05).
     其中大脑中、前、后动脉的脉动指数均与年龄呈正相关(r=0.394、0.299、0.352,均P<0.05),大脑前动脉脉动指数与收缩压和脉压差呈正相关(r=0.338、0.353,P<0.05),大脑中动脉脉动指数与脉压差呈正相关(r=0.220,P<0.05)。
短句来源
     Blood pulse flow, pulsatility index and standard deviation of blood flow were elevated from 317±48ml/min, 2.85±0.21 and 96±21 ml/min to 447±88 ml/min, 4.56±0.90 and 131±39 ml/min before and during EECP (P<0.05).
     流量差、流量脉动指数和流量标准差三个血流脉动性指标分别由反搏前的 317± 4 8ml/ min、2 .85± 0 .2 1、96± 2 1ml/ min升高到反搏中的 4 4 7± 88m l/ min、4 .5 6± 0 .90、131±39m l/ m in,P值均于小 0 .0 5。
短句来源
     The Pulse Vacuum Sterilization Controller Based on AT89C55
     基于AT89C55的脉动真空灭菌器
短句来源
     Reasons of Pulse Combstion Occurred in 34VP-18W Boiler and Solutions
     34VP-18W锅炉BFG燃烧脉动产生的原因及解决措施
短句来源
     The result of the test indicated that the pressure pulse conditions should be from low pressure 0. 05 mPa 10 mm to high pressure 0. 2 mPa 30 min, the best fermentation conditions should be water content 58%, pH 8. 5 and temperature culture 28℃.
     试验结果表明:压力脉动条件为低压0.05 mPa维持10 min,高压0.2 mPa维持30 min; 最佳发酵条件为原料含水量58%、pH 8.5、温度28℃;
短句来源
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  pulsating
     Unified Harmonics Analysis of Multi-pulsating Rectifier Circuits (continued 2) ——12/18/24/30/36/48 Pulsating Rectifier Systems
     多脉动整流电路谐波统一分析(续2)——12/18/24/30/36/48脉动整流系统谐波分析
短句来源
     The pulsating indexes of cerebral middle,anterior and posterior artery in LCI patients were 1.05±0.26,1.01±0.24,and 1.05±0.23 respectively,higher than 0.87±0.12,0.88±0.20,and 0.88±0.16 respectively in the healthy volunteers(P<0.05).
     s-1(均P<0.05),脉动指数分别为1.05±0.26、1.01±0.24、1.05±0.23,均高于对照组的0.87±0.12、0.88±0.20、0.88±0.16(均P<0.05)。
短句来源
     PROCEDURE TEST OF PULSATING FLASH WELDING FOR U75V RAIL USING DOMESTIC K900 WELDER
     国产K900焊机脉动闪光焊接U75V钢轨的工艺
短句来源
     Results show that the volume and shape of fuel oil pulsating boiler are similar to that of traditional oil-fired boiler,however,the furnace volume,the radiation heating surface,and the convection heating surface has reduced 55%,44.5%,and 13.5% respectively,while the heat transfer efficiency has enhanced more than 30%,the output capacity reaches 0.7 t/h,thermal efficiency to be 86%,heightening 2%,and the noise level<70 dB.
     结果表明,脉动燃油锅炉与燃油锅炉体积、形状相当,但炉膛容积、辐射受热面积,对流传热面积分别减少了55.0%、44.5%、13.5%,而传热效率提高30%强,出力达到0.7 t/h,热效率为86%,提高了2%,噪声<70 dB。
短句来源
     ANALYSIS OF COMBUSTION SYSTEM FOR THE Rijke- ZT TYPE PULSATING BOILER
     Rijke-ZT型脉动锅炉燃烧系统分析
短句来源
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  pulsation
Operating characteristics of solid-state fermentation bioreactor with air pressure pulsation
      
The paper deals with the development of a novel SSF bioreactor with air pressure pulsation.
      
By developing a measurement and control system under the Virtual Instrument (VI) concept, the performance of the SSF bioreactor with pressure pulsation was studied by cultivating Trichoderma koningii in solid medium made of wheat bran and corncob.
      
The cooling effects of pressure pulsation on solid porous beds are discussed.
      
Experimental results show that pressure pulsation enhances medium moisture evaporation, and hence, heat dissipation.
      
更多          
  fluctuation
In this paper, the classical risk process perturbed by diffusion is generalized by allowing for "size fluctuation" and the ruin probability for this new model is discussed.
      
A new feature extraction method using the amplitude fluctuation property of target HRRP for radar automatic target recognition
      
Actually, the amplitude fluctuation property of target HRRP also represents some feature information of the target.
      
Based on the scattering center model, a new feature extraction method using the amplitude fluctuation property of target HRRP is proposed in this paper.
      
Effect of soil water changes on photosynthetic characteristics of Taxodium distichum seedlings in the hydro-fluctuation belt of
      
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  pulse
A sensitive complex absorptive wave of Ca-ARS was obtained by using differential pulse voltammetry when a mercury film glass carbon electrode was immersed in 0.1 mol L-1 KOH and 4.5×10-4 mol L-1 ARS solution.
      
The reaction mechanism between isoquinoline and ·OH radical in aqueous dilute solutions under different conditions was studied by pulse radiolysis.
      
The electrochemical behavior of ciprofloxacin (CFX) and its interaction with the natural calf thymus DNA (ctDNA) is studied by using pulse difference voltammetry on a carbon electrode.
      
Furthermore, it is clear that when carrier signal h(t)=0, closed-loop pulse-width modulation (PWM) DC-DC converters are not well posed, and when some condition is satisfied, the closed-loop PWM DC-DC converters with a P controller are well posed.
      
In this paper, the authors propose a new space vector pulse width modulation (SVPWM) algorithm based on non-orthogonal coordinates for N-level inverters.
      
更多          
  pulsating
It is shown that frequency variations in Ca2+ oscillatory influx induce changes of pulsating enzyme activity.
      
Pulsating motions of a solid particle in turbulent flow
      
Radiation of a pulsating sphere in a viscous medium
      
Interaction of a swarm of particles with a pulsating liquid at small Reynolds numbers
      
The effect of the injection parameter on the averaged and pulsating velocity and concentration distributions in the layer is analyzed.
      
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