zero mean

Road surface roughness is introduced to simulate bridge deck roughness. It is assumed to obey Gauss probability distribution, with zero mean, ergodic stationary random process.

引入路面不平度来模拟桥面不平顺，假定路面不平度是服从Gauss概率分布，具有零均值、各态历经的平稳随机过程。

A big surprise in this latest study is that rain can fall not only in summer but also in winter, when the polar night would normally mean temperatures are well below zero.

在这项最新研究中，一个令人非常意外的发现是，不仅夏季有雨，冬季也下雨，而且冬季的极地夜晚意味着气温通常远低于零度。

W is a zero mean white noise source.

W是一个零均值的白噪声源.

This paper analyses the impact of the magnitude, phase and installation position tolerances on sidelobe of shaped-beam pattern using a normal distribution with zero mean as error mode.

文中以均值为零的正态分布作为误差模型，分别就幅度、相位以及安装位置公差对赋形方向图副瓣带来的影响进行了统计分析。

If measurement errors occur randomly, one can expect their mean to approach zero.

如果测量误差随机产生, 可以期望他们的平均值近于零.

In this paper, suppose the terrain is an ergodic wide-sense stationary two-dimensional random field with zero mean value on a local region, the basic property of its two-dimensional autocorrelation function is investigated.

本文假定在局部区域上，地形是一个零均值各态历经的宽平稳二维随机域，研究了其二维自相关函数的基本性质。

The magnitude of seasonally meridional migration in the location of the primary Polar Front ( PF1) is much less than that of the climatic monthly mean zero wind stress curl, but is near the mean position of zero wind stress curl.

第一极锋（PF1）位置的经向季节变化幅度远小于气候月平均零旋度线的经向季节变化幅度，但位于零旋度线的平均位置附近。