母体

Background: In order to the need of fetal growth, normal pregnancy induces a variety of cardiovascular adaptations.

研究背景：为了满足胎儿生长发育的需要，母体心血管系统发生一系列适应性变化。

Chinese culture is the parent and nucleus of Taiwan culture.

台湾文化的母体和核心是中华文化。

Morphology and Ultrastructure of Compound Eyes in the larval stages of Cherax quadricarinatus Morphology and Ultrastructure of Compound Eyes was investigated by TEM and SEM in the larval stages of Cherax quadricarinatus. The result is indicated: Morphology of compound eye and ommatidium in the larval stage were similar to that in adult stage. The area of the ommatidia increases from 906±29. 6μm〓 in larva Ⅰ(1. 5cm long) to 967±53. 3um〓 in larva Ⅲ(3cm long) and 3724±230.3μm〓 in adult (16cm long).

扫描电镜结果表明：刚离开母体的仔虾（体长约1cm）复眼和小眼的形态已接近成体，小眼的平均表面积由1.5cm仔虾的906±29.6um〓增长为3cm仔虾的967±53.3um〓和16cm成体的3724±230.3um〓；小眼个数也从体长1.5cm仔虾的1001个增加到3cm仔虾的1238个和16cm成体的5652个，红螯螯虾复眼的增大是由于小眼面积的增加和小眼数目的增多而引起的。

And by the depth, temperature, and the salt content of the water in which the oyster

珍珠的色泽受到作为其母体牡蛎种类及牡蛎生活水域的深度，温度和含盐度的制约。

Therefore, to the subsample's observation of continuous random parent population, if its material function can not be gotten easily the presented method can be used to approximate its distribution function, and.

因此对连续型随机样本母体中的简单随机子样的观察值，在不易得到其具体分布的情况下，可用此方法来近似求出其分布函数并可达到很好的逼近效果。

Therefore, to the subsample's observation of continuous random parent population, if its material function can not be gotten easily,the presented method can be used to approximate its distribution function,and good approximation effect can be achieved.

因此对连续型随机样本母体中的简单随机子样的观察值，在不易得到其具体分布的情况下，可用此方法来近似求出其分布函数并可达到很好的逼近效果。

Therefore, to subsample"s observation of continuous random sample parent population, if we can"t get its material function easily, or we dont know its density function, we can use this way to approximate its distribution function. And these methods can achieve good approximation effect.

对连续型随机样本母体中的简单随机子样的观察值，在不易得到其具体分布或不知道其密度函数的情况下，可用此方法来近似求出其分布函数并可达到很好的逼近效果。

To the establishment of prior distribution in RGTE, considering that reliability growth test data belongs to a dynamic parent population, and based on the stage reliability growth test data, the dynamic modeling methods for prior distribution establishment are studied.

在可靠性增长试验评定先验分布的确定方面，针对可靠性增长试验数据的动态统计母体特点，基于阶段可靠性增长试验数据，对可靠性增长试验评定中先验分布确定的动态建模方法进行研究。

Group contrast test ; sample variance ; parent population mean value ; fiducial interval ; freedom

成组对比试验；子样方差；母体平均值；置信区阀；自由度

There are some characteristics for reliability growth test evaluation of liquid rocket engine, such as its field test data is small sample, there are multi-kind stresses act on the system during accelerated life test, its life test data belongs to a dynamic parent population.

液体火箭发动机可靠性增长试验的特点有：系统现场试验为小子样、加速寿命试验中存在多种应力综合作用、可靠性增长试验数据属于动态统计母体。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。