平均差

He has been shoddy at times, but for significant stretches last season he was above average.

他有时候会表现的很差，但是上个赛季他的表现绝对在他平均水平之上。

Trigonometric series is used to simulate stationary, non-stationary, Gaussian andnon-Gaussin stochastic processes by spectral representation in which the non-stationary stochastic processes are expressed as the product of determinate functionsand stationary stochastic processes.

结合随机变量的Monte Carlo模拟法，随机场的局部平均法与随机过程的三角级数模拟法，用均值、方差、相关长度及功率谱等，可有效地描述随机变量、随机场、随机过程，及同时具有场与过程随机的变量。

Mean spherical equivalent refraction +/- SD was -2.34 +/- 0.99 diopters at baseline.

治疗前的平均等效球镜±标准差为-2.34±0.99D。

The mean change in spherical equivelent refraction during the follow-up interval was -0.42 D (SD: 0.68D) in right eyes.

睫状肌麻痹后的电脑自动验光结果显示：在28个月中右眼的平均屈光不正的进展是-0.42D（标准差0.68D）。

The paper fristly analyzed the reason of mine air reversing in Liangbei coal mine of Xinlong Coal Industry Corporation,which based on mensuration of mine ventilation resistance and spontaneousness wind pressure,and then the measures of preventing the air reversing was put forward.

在对新龙矿业集团公司梁北煤矿的矿井通风阻力测定和自然风压测量的基础上，找出梁北煤矿2007年1月气温突降后所引起的主井风流反向的主要原因，推导出导致风流反向的基本条件，提出在副井至-550 m运输石门之间增加调节设施以增大副井的风阻、增大主要通风机机械风压、在主井下安装压风机人为增大主井的机械风压、减少主井附近热源、对主井的风流进行降温处理和对副井的进风流进行预热以减少主副井之间的风流平均密度差等防止风流反向的控制措施，从而使主井恢复正常的进风状态，消除了矿井安全生产的严重隐患

For example, the standard error of our estimate of the average risk premium on common stocks is 2.3 percent.

例如，我们的普通股平均风险溢价估算的标准差为2.3%。

The results show that the entanglement of field-atom reduced to a stationary value with time evolution and the entanglement between two modes increase to another stationary value with intrinsic decoherence, and the values only depend on the two-mode photon number and mean photon number.

结果表明，存在内禀退相干时，随着时间的演化，场一原子纠缠逐渐减小到一个确定值，而模间纠缠逐渐增大到一个确定值，两者演化的最终值只取决于双模光子数差和平均光子数，而与内禀退相干因子无关。

So far, Mr Fellows says, sales from America's sunbelt have been "reasonably positive"—certainly no worse than par.

弗洛茨先生说，目前为止，在美国的阳光地带的销售已有"适度的活跃"——肯定不会差于平均水平。

After the psychological characteristics of4-1 2years old children in the process of observation and reflection wer eanalyzed and the r esults of the reflection were evaluated, the average result and the standard difference of the observating capacity of children at different age stages had been obtained, which provided refrence index for evaluating the super-normal children, And then, the psycho logical characteristics of super-normal children in the process of observation and reflectionw ere also discussed...

本实验对4—12岁儿童观察反映过程心理特点进行分析，对反映正误进行评定，获得了各年龄段儿童观察力的平均成绩及标准差，为鉴别超常儿童提供了参照指标，并探讨了超常儿童观察反映过程的心理特点，从动态中比较研究常态儿童与超常儿童的观察能力，还比较研究了儿童观察力与学习成绩及性别关系。

Applying the coupling methods, the author establishes the stability in total variation for the diffusion process corresponding to the mean-field model.

应用耦合方法，建立了相应于这个平均场模型的扩散过程的依全变差稳定性。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。