- 更多网络例句与脉波后的相关的网络例句 [注:此内容来源于网络,仅供参考]
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This system mainly contains the front-end pulse interception and back-end software analysis. In the first part, we used a non-invasive infrared measurement method based on the dual channel simultaneous measurement technique. We measured the photo-plethysmograph from the subject's fingers and toes simultaneously, then used an analog circuit and central control unit to process the signals. Finally, the digital volume pulse data is processed by a personal computer. Because the characteristic points of digital volume pulse always occur in sharp variations, this paper proposes two algorithms to solve this problem. First, we find the pacemaker and percussion wave peak from transient slope variation, and then locate the dicrotic notch and dicrotic wave peak by using the wavelet transformation algorithm. When we analyze the data, we use the Visual Basic graphical user interface, which together with the Matlab is the core of the system.
本系统主要包含前端脉波撷取及后端软体分析两部分,其中前端脉波撷取部份是以非侵入式的红外线量测方式,双通道同步量测受测者手指与脚趾的光容积变化描记图,同时将此讯号经类比处理电路及中央控制单元输出成为数位容积波,再传送至个人电脑中;而在后端软体分析部份,因数位容积波之特徵点皆出现於波形中急剧变化的部份,故本论文以瞬间斜率变化量来定位脉波讯号中的起搏点及主波峰顶点,并利用小波转换演算法(wavelet transformation algorithm)来分析重搏切迹与重搏波顶点;程式撰写主要以Matlab为核心,结合Visual Basic的图形化使用者操作介面,增加系统与使用者间的亲和力。
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It produces a voltage, which has equal amplitude and opposite di rection against the distortion voltage contained in power system with PWM invert er, and then it is injected to network through transformer by lower-pass filter.
它利用PWM逆变器产生与电网畸变电压大小相等、方向相反的脉宽调制波,经低通滤波器滤除开关纹波后通过变压器串联在电网中,以达到稳定负载端电压、改善电能质量的目的。
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The calculation results shows that ,(1) when the rotor rotates at the working speed, a local regurgitant whirlpool that is rightabout to the rotor"s rotating direction appears in the classifying region, which makes the separated granules come back to the outside of the classification district and influences the classification efficiency of the turbine classifier;(2) in the condition of a low rotating speed of turbo rotor, ultrafine particles can follow the gas phase by and large, but when the rotating speed increases, a phenomenon of velocity slippage between two phases appears evidently;(3) A operating parameter, air flow rate is so important that can directly influence the stability of flow field in classifying chamber, the bigger the air flowrate is , the steadier the flow field is;(4) Compared with straight blades, the new shape of blades with backward crooked elbow are helpful to improve the stability of flow field and form whole stream easily, also beneficial to advance the classification accuracy and classification efficiency;(5) The motion trace of particles are very complicated when the turbo rotor rotates at a high speed, the constant bounce of the particles appear between the blades and the coarse particles are even bounce back from the inlet, only the finer can pass through the classification area from the oulet;(6) Along with the increase of the rotor"s rotating speed, radiah axial and tangential velocity all begain to fluctuate repetitively like sine-wave, the smaller the particles are, the more violently they fluctuates.
数值模拟结果表明,(1)在涡轮达到工作转速时,在分级区域形成了一个与涡轮旋转方向相反的局部回流涡,它使得分离出来的细粒重又被带回分级轮外边缘,从而严重影响分级机的分级效率;(2)粉尘粒子在涡轮低速运动情况下,基本上能跟随气体运动,但随着转速加大,两相之间出现了明显的速度滑移现象;(3)分级机工作时的风量也是一个比较重要的操作参数,它可以直接影响到分级机内腔流场的稳定性,风量越大,流场越稳定;(4)同直叶片形状相比较,带后弯导板的叶片,有利于改善流场的稳定性,流场容易形成整体流,对提高分级效率和分级精度都非常有利;(5)粒子轨迹线在涡轮转速较高时十分复杂,有的出现了反复的弹跳现象,大颗粒不能通过分级区域而从进口返流了,只有细小的颗粒才从出口处流出;(6)涡轮转速加大时,粒子的径向、轴向和切向速率出现了明显的类似于正弦波的脉动现象,颗粒越小,脉动程度越为剧烈。
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With the orthogonal wavelet transform, the dissipative events of the fluctuating moisture field contributing to inertial sub-range intermittency buildup have been identified. After the dissipative events have been suppressed by introducing a conditioning criterion, the intermittency that effects on the statistical structure of the inertial subrange is restrained.
利用离散正交小波变换將湍流湿度脉动场中的耗散事件分离出来,通过引入限制因子,將湍流脉动场中的耗散事件滤去后,能较好地抑制湍流湿度的间歇性。
- 更多网络解释与脉波后的相关的网络解释 [注:此内容来源于网络,仅供参考]
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piezoelectric transducer:压电转换器
Paik)合作,利用压电转换器(piezoelectric transducer)及摄波管观察脉波,得到八种基本脉象波形,即风、热、湿、燥、寒、盛、衰、阻. 前五者为外因,后三者为内气的现象. 英国医生堪阳(J. N. Kenyon)利用他们的技术,诊断病人左右寸关尺的部位,发现十二部位的脉象,
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whipping:冲荡
在冲击波阶段,冲击波波头具有突跃形式,幅值迅速达到最大,突越后紧接着近似于按指数规律衰减[2],衰减后持续时间不超过数毫秒;在气泡脉动阶段,爆炸产物在水中形成膨胀收缩气泡的脉动压力对舰船产生的作用称之为冲荡(whipping)或振荡效应.
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postsphenoid:后蝶骨
post-sowingtreatment播后施药 | postsphenoid后蝶骨 | postsphygmic脉波后的
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postsphygmic:脉波后的
postsphenoid后蝶骨 | postsphygmic脉波后的 | postsphygmicinterval脉后间期