平均流速

  • 网络average velocity;Vmean;TAV
平均流速平均流速
  1. 400m以浅的上层,海流从太平洋流入到东海,平均流速约为10cm/s,其速度核心位于160m附近;

    In the top 400m layer , the current flows from the Pacific to East China Sea with an average velocity of about 10cm / s.

  2. 通过流速横向分布的概化分析,得到U形渠道中垂线平均流速与断面平均流速之间横向修正系数kh的确定函数。

    Through the data generalization analysis of transverse velocity distribution , the function of transverse correction coefficient kh between the average velocity of perpendicular bisector in the U-shaped canal and cross section can be obtained . 4 .

  3. 高含沙明渠紊流光滑区f-Re关系与平均流速公式

    The f-Re relationship and formula for mean velocity in smooth region of turbulent open channel flow with hyperconcentrated sediment

  4. 取水口内部及其近区流场具有明显的三维紊流特征,环境水流流速与取水口平均流速之比R是影响流速分布的主要因素;

    Remarkable 3D turbulence characteristic was discovered in the velocity fields inside the intake and its near area , its high dependence on R.

  5. 从这样的近似解得出的Reynolds剪应力是和平均流速的坐标梯度成正此。

    From this approximate solution the shearing component of the Reynolds stress is found to be directly proportional to the gradient of mean velocity .

  6. 改进了Gao等(1994)方法,并用以计算潮汐汊道口门落潮干道的垂线平均流速。

    Improvements to the Gao Collins ( 1994 ) method are suggested to obtain long term depth averaged current speeds within the central ebb channel of a tidal inlet system .

  7. 并观测肾血流收缩期峰值流速(VS),舒张末期峰值流速(VD),平均流速(VM),搏动指数(PI)及阻力指数(RI)的变化。

    The changes of systolic peak velocity ( VS ), diastolic peak velocity ( VD ), mean glow velocity ( VM ), pulsatility index ( PI ) and resistent index ( RI ) of renal blood flow were observed .

  8. 在通道入口附近,气流速度和温度变化剧烈,而在出口处截面平均流速和温度随Kn的增加而降低。

    The gas average velocity and mean temperature increase greatly at the channel entrance , and both the temperature and velocity at the channel exit decrease with the increase of Kn numbers .

  9. 堆芯冷却剂平均流速为3.2m/s,小于临界流速;

    The average flowrate of reactor core coolant is 3.2 m / s , lower than the value of critical flowrate ;

  10. 利用ADV测流技术实测流速剖面,分析壁面切应力流速和分区平均流速以率定不同的壁面糙率。

    The wall roughness coefficients were calibrated by the shearing velocities and zoned average velocities that were analyzed from velocity profiles measured by means of acoustic doppler velometer ( ADV ) technology .

  11. 各型脑中风组颈内动脉时间平均流速(TAVICA)较正常组减低、阻力指数(RI)、搏动指数(PI)较正常组明显升高;

    Time average velocities of internal carotid artery ( TAV ICA ) were significantly reduced in all type stroke patients than normal subjects . The resistance index ( RI ) and pulsatility index ( PI ) in stroke patient were higher than that in normal subjects .

  12. 本文报导112例粮食仓库保管员与50例正常成人常规肺功能和最大呼气平均流速&容量曲线(MEFV)的测定结果。

    The article reports the pulmonary function and the maximal expiratory flow - volume ( MEFV ) curves of 112 grain - store keepers and 50 normal healthy adults .

  13. 脉冲多谱勒(PW)频谱特征呈单相或双相、包络线不清晰、频谱增宽的高速低阻力的血流频谱,测量收缩期峰值流速为15~39cm/s,平均流速(3.9±0.16)cm/s;

    The direct manifestation of Doppler spectrum was high velocity flow with low resistance . Peak velocity of systolic flow was 15 ~ 39 cm / s and mean velocity ( 3.9 ± 0.16 ) cm / s.

  14. 180°断面上STCC平均流速的季节变化集中在20-24°N之间,其中夏季7、8月份最高,冬季1、2月份最低;淡水试验与控制实验的差距在冬季更为明显。

    The seasonal changes of current velocity of STCC on 180 ° section is concentrate between 20-24 ° N. It is highest during July and August , lowest during January and February . The difference between water-hosing experience and control run is more obvious .

  15. 在现有的试验研究成果的基础上,采用先进的三维声学多谱勒流速仪(ADV),着重测量和分析了有刚性植被河道水流的水力特性,包括平均流速、紊动强度和雷诺应力。

    Based on the experimental data , a three-dimensional - Acoustic Doppler Velocimeter is used here to measure the velocity components , the turbulence intensity and the Reynolds stress of the flow field in three coordinate directions .

  16. 病人子宫动脉平均流速(Vm),阻力指数(RI),搏动指数(PI),能量图(CDE)检测,提示病变子宫及病灶血流信号减少,术前术后对照有显著差异(P<0.01)。

    The indexes of mean velocity , resistance index , pulsatility index and color Doppler energy revealed great reduction of blood flow in the lesions and the lesion part of uterus . There existed significant difference before and after the treatments ( P < 0.01 ) .

  17. 在流速分析方面,分别对TCP流、UDP流和ICMP流的平均流速从协议分析的角度进行建模,从平均流速模型参数分析中,获得在不同阶段对决定IP流平均流速的若干主要影响因子。

    The possible tendency of IP flow distribution is forecasted based on those discussions at the end of this dissertation . In Chapter 3 , this dissertation models the IP flows rate based on protocol analysis from its three main components : TCP flows , UDP flows and ICMP flows .

  18. 术后2h、1周时主干蒂穿支皮瓣组的腹壁上动脉平均流速减慢,与另一组比较有统计学差异(P<0.05);

    At 2 hours and 1 week after operation , the blood stream velocity in the superior epigastric artery in the perforator flap with the superior abdominal artery pedicle was reduced , and there was a statistical difference between the two kinds of flaps ( P < 0.05 );

  19. 三峡大坝建成后,库区流水区断面流速只有0.04m/s,比天然河道断面平均流速减小将近5倍左右。

    After the Three Gorges engineering is accomplished , the speed of water through cross section , 0.04 m / s , is only 1 / 6 times of natural average speed .

  20. 三峡大坝在二期蓄水156m水位运行时,计算江段内大部分断面平均流速与65.8m水位相比大大减小,在0.15~1.00m/s范围内波动。

    When the reservoir was operated at the water level of 156m , the cross-section average velocity in most of the reaches , varying from 0.15m/s to 1.00m / s , was reduced sharply compared with that in the natural condition .

  21. 分别测定3组入颅总血流量(TCBF)、颈内动脉、椎动脉血管面积、平均流速、平均血流量。

    TCBF , the mean vessel area and mean blood flow velocity of the internal carotid artery ( ICA ) and vertebral artery ( VA ) were measured by MR PC-cine technique in 3 groups .

  22. 在156m和175m水位时断面各个点的垂线平均流速更接近该断面的断面平均流速,整个断面的垂线平均流速横向分布趋于均一化。

    In both the water level of 156m and 175m , the gaps between the depth-averaged velocity and cross-section average velocity were smaller than that in the natural condition , indicating that the transverse distribution of depth-averaged velocity trend to become homogeneous within cross-sectional area .

  23. 抽水工况平均流速从0.96m/s增大至1.25m/s时,1~测点的最大应变为17~22με,谱密度无明显的峰值。

    During pumping operation the maximum strains are subject to variation from 17 V - e to 22p e with velocity from 0 . 96m / s to 1 . 25m / s and there is no evident peak shown on the spectrum curves .

  24. 同时提出在洗涤150L料浆,加水至300L效果最好,用水量少,大约为2020L,平均流速约为1000L/h时,洗涤工作时间为4.28h,是氧化锆制备过程中陶瓷膜分离工艺的最佳选择。

    The water use quantity is less , about 2020L ; when average flow rate is about 100L / h , the working time for washing is 4.28h ; it is the optimal selection for ceramic membrane separation technology in the course of the zirconia preparation .

  25. 方法应用5MHz线阵探头彩色多普勒血流显像仪观察53例脑卒中患者和59例健康老年人两侧颈动脉内中膜厚度、斑块情况,两侧颈总动脉截面积、平均流速和血流量以及血流动力学改变。

    Methods A noninvasive method based on high-resolution color Doppler flow imaging was used for quantification of intima-media thickness , identification of plaque and determination of blood flow velocity in the carotid artery . Fifty-three aged patients with stroke and 59 aged healthy subjects were imaged .

  26. 明渠水流自掺气对断面平均流速的影响

    The influence of aeration on average velocity of self-aerated chute flow

  27. 烟气平均流速自动测量及其自动检测装置

    Automatic measurement of gas average velocity and its automatic checking device

  28. 用选点法确定圆管流的截面平均流速

    On the Measurement of Flow-rate in Cylindrical Pipes by the Traversing Method

  29. 葡萄导管平均流速测定新方法

    A novel method for measuring vessel flow velocity in grapevine

  30. 弯道水流纵向垂线平均流速分布的计算

    Calculation of the Longitudinal Depth Averaged Velocity Distribution of Curved Conduit Flow