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This paper presented the merit of adaptive threshold with the more advantageous pointwise variance method. 本文分析了自适应阈值的优点，进而提出逐点噪声方差法在去噪方面有更强的优势。
In this article, by exploiting flanking markers through the widely applied half-sib design, we have developed the structures of three variance components, i.e. 该文在侧翼标记情况下利用广泛使用的半同胞设计提出了3种方差组分，即标记组间方差、组内多基因方差和组内重组方差及其构成。
Testing results achieve the technical indices and precision requirement. 2 The properties of the FOG signal random drift are detected with the Allan variance method. 2针对光纤陀螺输出信号漂移误差和噪声对视轴稳定回路的影响,提出了采用Allan方差法对光纤陀螺零漂信号进行时域分析方法。
The simulations prove that not only the PSNR improved, but also the visible blocking effect is effectively decreased by using adaptive threshold and pointwise variance method. 仿真结果表明：采用自适应阈值并结合具有更强自适应性的逐点噪声方差法不仅能提高医学图像的峰值信噪比，还能有效地降低由传统阈值所带来的方块效应。
The simulations prove that not only the PSNR improved,but also the visible blocking effect is effectively decreased by using adaptive threshold and pointwise variance method. 仿真结果表明:采用自适应阈值并结合具有更强自适应性的逐点噪声方差法不仅能提高医学图像的峰值信噪比,还能有效地降低由传统阈值所带来的方块效应。
The two common means for segmenting the fingerprint image are variance method and direction method, which utilize its gray characteristic and direction information, respectively. 摘要在研究和分析方差法和方向法的基础上，提出了一种指纹图像分割的新方法。
He trudge three hour in the snow to get back home. 他在雪中跋涉三个钟点才回到家。
Time-delay Vector Variance Method and Its Application to Gear Fault Diagnosis 延时矢量方差算法及其在齿轮故障识别中的应用
Our family reunions are always three ring circus. 我家合家团聚的场面总是热闹非凡。
The train arrived on the dot of three o'clock. 那辆火车三点钟准时到达。
Her family lives three li away from her school. 她家住在离学校有三里路的地方。
We spied three figures in the distance. 我们望见远处有三个人影儿。
The earthwork was cast up in three hours. 土方工程在三小时内就完成了。
It's three blocks straight ahead. 一直往前走过三个街区就是。
The investigator will be divided into three groups. 所有的调查员将被分为三个小组。
Three people can sit in the back of this car. 这车的后座可坐3个人。
I did the calculation by the rule of three. 我是根据比例运算法则计算出来的。
He is on night duty three days a week. 他一个星期要上三天夜班。
He knocked back three pints of beer in ten minutes. 他在10分钟里喝了3品脱啤酒。
It's three years to the day since we met. 我们整整三年没见面了。