平方

In this paper, we use Chi-square distribution instead of Gaussian distribution as the model of ASE noise.

本文提出用x平方律分布模型代替高斯信道模型，并将高性能的不规则重复累积码应用于远程光纤通信系统。

Generalized formula is derived for inverse filter with hybrid phase. And the method based on error criteria and iteration is proposed.

对该方法难以解决的混合相位问题，推导出通用公式，并提出基于最小平方误差准则和循环迭代的求解方法。

This paper describes in detail the working principles,structure and frequency response characteristics of an eddy geophone.

本文详细地介绍了涡流地震检波器的工作原理、结构及其频率响应特性——涡流检波器的输出特性在固有频率之上是按外界激励频率的平方递增。

The Grove Mountains expedition is one of the highlights of this expedition, after surveying and mapping personnel have conducted four times the Grove Mountains mapping, geology and glaciology comprehensive survey, field mapping of the Grove Mountains, the surface of the core area of 110 square kilometers topographic maps and maps of protected areas; emplaced 10 geodetic control points, seven ice-flow monitoring stations; the use of different resolution optical images, SAR images, carried out the distribution of the ice fissure information extraction research, production of the Grove Mountains region Flat satellite image maps, digital elevation models and a wide range of blue ice distribution maps, for my recovery to the 9834 Antarctic meteorites have made contributions.

格罗夫山考察是本次考察的亮点之一，此前，测绘人员已进行过4次格罗夫山测绘、地质与冰川学综合考察，实地测绘了格罗夫山核心区110平方千米表面地形图和保护区地图；布设了10个大地测量控制点、7个冰流速监测站；利用不同分辨率光学影像、SAR影像等，进行了冰裂隙分布信息提取研究，制作了格罗夫山地区平面卫星影像图、大范围数字高程模型及蓝冰分布图，为我国回收到9834块南极陨石作出了贡献。

The two methods are presented for non-stationary leakage signals based on original feature gradate. One is a combination of the peak-peak and grads, the other is mean energy method, with the methods eliminate influence of noise and the stress concentration identification is improved. Based on the relativity for wavelet coefficient square, the signal singularity detection theory of wavelet transform was employed to determine metal magnetic memory. Experiment shows that the method is valid for leakage signal.

针对含有噪声非平稳性的漏磁信号，在原有信号特征量梯度的基础上，给出了新的时域空间梯度和峰-峰值组合特征量，以及能量峰值处理方法，有效消除了随机噪声对磁记忆信号的影响，提高了应力集中区的识别率；从磁记忆信号的奇异性检测角度出发，通过多尺度小波系数的平方相关一致性来确定真正的应力集中区；实验验证了所提方法的有效性。

We have fabricated and tested high-T SQUID planar gradiometer patterned from YBCO thin film deposited on a SrTiO3 bicrystal substrate.

我们在10×10平方公厘的SrTiO3双晶基片上，设计并制备了YBCO双晶结dc-SQUID一阶平面式梯度计。

The Shanghai Grand Theatre is in the north-west of the square.

上海大剧院是在西北部的平方。

A unit of gravitational acceleration equal to one centimeter per second per second.

重力加速度单位等于每厘米平方秒。

Pay attention to see if your child is a "grazer" or a 3-squares-a-day kid and set an eating schedule that reflects their style.

注意看看你的孩子是一个"grazer"或3平方为期一天的孩子，树立良好的饮食时间表反映了他们的风格。

The largest island in the world is Greenland, with an area of about 2,175,600 square kilometres.

世界上最大的岛屿是格陵兰岛，大约2，175，600平方千里。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。