百分曲线

Their heights were around four standard deviations below the 50th percentile of the normal growth curve.

他们的身高大约比正常生长曲线的第50个百分位数低4个标差准。

Through analyses, we can make the conclusion that, the relation of seed fresh weight dry weight and days after pollination, fat percent content, protein nut content, starch nut content can be expressed with Logistic equation; the change of kernel volume, moisture content of kernel and days after pollination accorded with three ascend curve equation. Kernel protein content, starch content and the changes of days after pollination tallied with reciprocal equation and they had high relation.

经过统计与分析，可以看出籽粒鲜重积累量与授粉后时间、籽粒干重与授粉后的时间、脂肪净含量、脂肪百分含量、蛋白质净含量、淀粉净含量与授粉后的时间均可以用Logistic方程描述，籽粒体积变化与授粉后的时间关系表现为三次上升型曲线方程；籽粒的水分含量与授粉后的时间关系表现为三次下降型曲线方程；籽粒中蛋白质百分含量与授粉后时间的动态变化规律、籽粒中淀粉百分含量与授粉后时间的动态变化规律符合倒数方程，均具有较高的拟合度。

The formulas for confidence limits of percentiles and percentages and tolerance limits of a normal distribution are given by means of the noncentral t-distribution.

建立了正态分布置信限曲线方程，给出了其百分位值和百分率的置信限公式和容忍限公式。

The centile curves fitted by BCPE models were consistent with the data distributions of MCI.

以BCPE模型拟合的百分位数曲线符合掌骨指数数据的实际分布。

Results The degrees of freedom of parameter curves of,,σ,ν, and т from BCPE distribution for height, weight and BMI were selected according as the smallest AIC and GAIC (3), and the differences between percents of cases below the centile curves and the expected values were

结果 根据最小Akaike信息准测(Akaike Information Criterion， AIC)和广义AIC选择了身高、体重和BMI BCPE模型，σ，ν，т下参数的自由度，依据BCPE模型所估价的百分位数曲线下样本例数的百分数与理论期望值相差在0.01%-1.21%之间。

In the paper only the range of normal value and the description of frequency distribution are discussed. In theory the widely-used percentile method to determine the range of normal value is imperfected. Curve fitting method show some advantage in determining the range of normal value, but is difficult to calculate.

从理论上说明了现在常用的确定正常值范围的方法存在一定的问题，尤其证明了大家使用得比较多的百分位数法存在的缺陷，说明了曲线拟合法的优点，而在频数分布拟合完成之后，就已经找到了频数分布资料的理论分布曲线，有了理论分布函数，我们利用分布函数计算正常值范围就比较容易，也比较准确。

The head girths of several patients were above the 97th percentile of the normal growth curve, but were normal in a special growth chart for achondroplasia.

有几位患者的头围大於正常生长曲线的第97个百分位数，可是在软骨发育不全侏儒患者特有的生长曲线中，这些头围是正常的。

In recent years, LMS technique outstands in mushrooming methods about fitting percentile curves, which had been widely used to establish normal references in many countries and areas worldwide, mainly on indicators as height, weight and BMI.

近些年关于拟合百分位数曲线标准的文献层出不穷，偏度均值变异系数法技术可谓一枝独秀，目前广泛用于许多国家及地区的生长发育百分位数标准曲线制订，主要应用于儿少身高、体重及BMI领域。

Through analyzing the heavy mineral combination and its distribution characters in Malang Area of Santanghu Basin, the source direction of deposits were judged in Malang Area by using the type of the mineral combination, its percentage content and curve of stability coefficient, in combination with the percentage distribution of quarts sandstones in each stratum.

通过对三塘湖盆地马朗地区重矿物组合及分布特征的分析，利用重矿物组合类型、百分含量及重矿物稳定系数的曲线特征，结合各层系的石英砂岩百分含量分布，判断了马朗地区的沉积物源方向。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。