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zero mean flow 无平均流动
W is a zero mean white noise source. W是一个零均值的白噪声源。
Validation of Quasigeostrophic Zonal Mean Flow Responses to Torques. 准地转纬向平均气流对转矩反映的确认。
In this study, those remaining effects are treated asstochastic noise and are assumed white Caussian distributed with zero mean. 在这项研究中,那些未被考虑的各影响因素被作为随时噪声加以处理,并假设其具有零均值白高斯分布。
In this example for that X is a zero mean uniform R.V, Y is a zero mean uniform R.V, U is the difference of R.V.X, Y, and V is the product of R.V. 本文以甲变数为均匀随机变数，乙变数为均匀随机变数，丙变数为甲乙随机变数之差，及丁变数为甲乙随机变数之积的情况下，图示验证二维随机变数联合机率之特性。
In this example for that X is the product of zero mean uniform R.V.Urn0, Y is a zero mean uniform R.V, U is the cosine of product of R.V.X, Y, and V is the difference of R.V. 本文以甲变数为均匀随机变数之积，乙变数为均匀随机变数，丙变数为甲乙随机变数积之馀弦，及丁变数为甲乙随机变数之的差情况下，图示验证二维随机变数联合机率之特性。
In this example for that X is a zero mean uniform R.V, Y is the product of zero mean uniform R.V.Urn0, U is the sum of R.V.X, Y, and V is the cosine of product of R.V. 本文以甲变数为均匀随机变数，乙变数为均匀随机变数之积，丙变数为甲乙随机变数之和，及丁变数为甲乙随机变数积之馀弦的情况下，图示验证二维随机变数联合机率之特性。
In this example for that X is the sum of zero mean uniform R.V.Urn0, Y is the cosine of zero mean uniform R.V.Urn0, U is the product of R.V.X, Y, and V is the sum of R.V. 本文以甲变数为均匀随机变数之和，乙变数为均匀随机变数之馀弦，丙变数为甲乙随机变数之积，及丁变数为甲乙随机变数之和的情况下，图示验证二维随机变数联合机率之特性。
A analytical mode matching method is developed for the sound propagation through rectangular flow duct with mean flow and with lining. 流管实验装置是测量有流动情况下航空发动机消声短舱内声衬声阻抗的主要装置。
In this example for that X is a zero mean normal R.V, Y is the product of zero mean uniform R.V.Urn0, U is the even exponential of sum of R.V.X, Y, and V is the product of R.V. 本文以甲变数为均匀随机变数，乙变数为均匀随机变数之积，丙变数为甲乙随机变数和之偶指数函数，及丁变数为甲乙随机变数之积的情况下，图示验证二维随机变数联合机率之特性。
Results The mean flow velocity(MFV) of intracranial vessel in patients with vascular migraine attack was significantly lower than that in the control. 结果：儿童血管性头痛患儿发作期颅内外动脉最高平均血流速度(MFV)低于正常对照组；
In this example for that X is the sum of zero mean uniform R.V.Urn0, Y is a zero mean uniform R.V, U is the product of R.V.X, Y, and V is the difference of R.V. 本文以甲变数为均匀随机变数之和，乙变数为均匀随机变数，丙变数为甲乙随机变数之积，及丁变数为甲乙随机变数之的差情况下，图示验证二维随机变数联合机率之特性。
In this example for that X is a zero mean normal R.V, Y is the cosine of zero mean uniform R.V.Urn0, U is the even exponential of sum of R.V.X, Y, and V is the difference of R.V. 本文以甲变数为均匀随机变数，乙变数为均匀随机变数之馀弦，丙变数为甲乙随机变数和之偶指数函数，及丁变数为甲乙随机变数之的差情况下，图示验证二维随机变数联合机率之特性。
Methods:14 AF patients of normal cardiac function and 18 normal subjects were studied with transcranial Doppler (TCD) of mean flow velocity(Vm) and pulsatility index (PI). 方法 :选择 14例心功能代偿期AF患者作观察组 (AF组 ) ,18例同龄健康体检者作对照组。采用经颅多普勒检测仪 (TCD)以脑动脉平均血流速度 (Vm)及搏动指数 (PI)为观察指标。
The parametric resonances of first mode of order 1/2 of clamped-clamped pipes conveying pulsating fluid are investigated under some different mean flow velocities. 对三种合成管道在几个不同的平均流速和脉动流作用下做了多次重复实验获得了第一振型1/2次谐波参数共振相关实验数据,实验结果与理论结果在定性上一致。
The results showed that the peak syxtolic flow velocity(PFV),end diastolic flow velocity(EDV),and mean flow velocity(MFV)increased significantly in comparison with control group. 结果显示，实验动物颅脑撞击伤后，收缩期血流峰值速度（PFV），舒张末期血流速度（EDV）和平均血流速度（MFV）3小时测值最大，到6小时又回落接近伤前水平。
In this example for that X is the cosine of zero mean uniform R.V.Urn0, Y is theGaussian of zero mean uniform R.V.Urn0, U is the sum of R.V.X, Y, and V is the cosine of product of R.V. 本文以甲变数为均匀随机变数之馀弦，乙变数为均匀随机变数之高斯函数，丙变数为甲乙随机变数之和，及丁变数为甲乙随机变数积之馀弦的情况下，图示验证二维随机变数联合机率之特性。
In this example for that X is the sum of zero mean uniform R.V.Urn0, Y is the even exponential of zero mean uniform R.V.Urn0, U is the cosine of sum of R.V.X, Y, and V is the sum of R.V. 本文以甲变数为均匀随机变数之和，乙变数为均匀随机变数之偶指数函数，丙变数为甲乙随机变数和之馀弦，及丁变数为甲乙随机变数之和的情况下，图示验证二维随机变数联合机率之特性。
The nonlinear resonance interaction between a finite-amplitude disturbance-wave ensemble and the zonal mean flow in rotating barotropic atmosphere is studied by multiple-time-scale analysis. 本文应用多重尺度法研究了在旋转球面上正压大气中有限振幅扰动波包与纬向基本气流的非线性共振相互作用。

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