The quantitative data was analyzing by using Chi-squared test, ridit analysis and logistic regression.

Meanwhile, we introduce the noncentral chi-square gamma distribution that can interpret the physical reason of radar clutter better.

同时介绍了较能贴近雷达杂波物理成因的非中心x~2伽马分布的产生原理。

Noncentral chi-Square Gamma Distribution Clutter Model

非中心化chi平方伽玛分布杂波模型

In this paper, we use Chi-square distribution instead of Gaussian distribution as the model of ASE noise. Irregular repeat accumulate ( IRA) codes have high performance very closed to Shannon limit. We apply IRA codes to the long haul fiber communication system.

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（IRA）码应用于远程光纤通信系统。

Then, we describe the time distribution of practical overtime by chi-square distribution. After deducing the wage-output efficiency, we take it as the assessing standard of wage-pricing method, and find the optimization model with which the optimal wage-pricing is satisfied.

然后应用X2分布描述了加班时实际工作时间的分布，得出了工资产出效率，以此作为工资定价的评价标准，导出了最优工资定价方案满足的优化模型。

In this paper, it proposes three SD algorithms to aim to improve the loose of layer radiuses: ( 1) It proposes a statistical pruning SD based on the expectations of chi-square distribution ( EPSD).

本文从改进层内各检测半径的松散性出发，提出三种改进的球形译码算法。如下：（1）提出一种基于卡方分布期望值的统计裁剪球形译码算法（EPSD）。

It is found that the pdf is a noncentral chi-square distribution for a synchronized code, but a central chi-square distribution for the unsynchronized situation.

结果发现，对于码同步时，pdf是非中心X平方（Chi-square）分布，然而，对于码非同步时，pdf是中心X平方分布。

This paper analyzes several arithmetics of track correlation and set forth a arithmetic which integrates NNA with chi-square distribution, and computes statistic mean value to select track.

本文分析了多种航迹关联算法，提出一种将最近邻法与chi-square分布相结合，通过计算统计均值选择航迹的关联方法。

Methods the theory of Chi square distribution, the SAS system and sampling survey were used.

方法使用卡方分布的理论，SAS软件及抽样调查方法。

And in the fault detection, a new integrated chi-square test is proposed.

并且在对系统进行故障检测方面，提出了一种新的组合式X2检验法。

Application of Chi-square Test in Period before Strong Earthquake of North China

卡方检验在华北强震前的应用

The results were analyzed with the chi-square test and t test.

行卡方检验、t检验。

Count data by using chi-square test, t test measurement data.

计数资料用卡方检验，计量资料用t检验。

[ Methods] Investigation was conducted in residents over 15 from 6 villages and 3 street district with multiplestage stratified chester random sampling method in Wuhan in 2002. [ Results] Of the 356 people investigated, the morbidity rate of the disease was 2.81%.

[方法]2002年用多阶段分层整群随机抽样方法，抽取武汉市蔡甸区3个街、6个村的部分15岁以上居民进行调查。[结果]调查356人，糖尿病患病率为2.81%。

The Method of Mixed two-phase Stratified Sampling in Market Research; Methods Stratified chester random sampling.

市场调研中的混合双重分层抽样方法方法采用分层整群随机抽样的调查方法。

Any of various birds of the widely distributed family columbidae, characteristically having deep-chested bodies, small heads, and short legs, especially the rock dove or any of its domesticated varieties.

鸽子一种分布很广的鸽亚科鸟，特点是有厚胸的身体，头小，腿短，尤指野鸽或家鸽。

The other health problem in Borzoi ( and any deep-chested dog) is the occurrence of bloat and torsion.

另一个有关于猎狼（和任何胸深的犬种）的健康问题是胃涨气和胃扭转。

An old breed of powerful deep-chested smooth-coated dog used chiefly as a watchdog and guard dog.

古老品种的健壮的狗，胸部很厚并且皮毛光滑，主要用于看门狗和看家狗。

A big, deep-chested wrestler Dyke himself was a heavy built, well-looking fellow.

身材魁梧、胸部很厚的摔角者.戴克是个身材魁梧、脸相漂亮的家伙。

Teng step and seat comfort is also the general, and lateral support package is not satisfactory.

而且迈腾的座椅舒适度也一般, 包裹性和侧向支撑都不尽如人意.

Mogotan as Leading technology of business car was approved by the market.

作为一款“科技领先”的商务轿车,迈腾在高科技方面受到市场的认同.