normal density的例句大全

In this paper some partial derivatives of a matrix function with respect to a vector variable are derived first. By using of these derivatives, the representation of the normal approximation for any distribution density function of a random vector is given.

本文首先推导了若干矩阵函数对向量变量的求导公式，并以此为基础对任意的随机向量，给出其分布密度函数的正态迫近表示。

Results of the method are in good agreement with the aerodynamics rules. Then, based on the Dunn-Kang chemical model, the electron distribution and normal electron density are calculated and agree well with American flight existing experimental data.

利用Dunn-Kang化学模型对弹头电子分布和驻点法向电子密度进行了研究，并与RAM-C飞行试验比对，二者吻合良好。

results: the mean vessel density and diameter of port wine stain lesion is statistically more than those of normal skin.

结果：未治疗的鲜红斑痣皮损处与同一患者正常皮肤比较，平均血管密度和平均血管直径均较大，有统计学差异。

their idea was that a normal star implodes until its core reaches the density of an atomic nucleus.

他们认为，正常的恒星必须在其核心密度增加到与原子核密度相当时，才会爆炸。

see material pledge: floor of normal aggrandizement wood should be with high density beaverboard is base material.

看材质：正常强化木地板应是以高密度纤维板为基材。

in this study, red cells of 15 normal children and 12 ida children were stratified into 3 layers respectively using density gradient centrifugation. each of the layers consisted of 1/ 3 part of the sample.

采用密度梯度离心法将12例缺铁性贫血（IDA）患儿和15例正常儿童的红细胞离心分离为各1/3上、中、下三层，并采用煌焦油蓝生理盐水法。

normal test method is employed to explore the relationship between dry density and optimum water content of coal gangue used in daming.

采用标准试验方法求得筑坝用煤矸石的最大干密度和相应的最优含水量。

This paper reports the results of a study of the relationship between the pulmonary density differences ( PDD) and the ventilatory function of the lung ( VFL) in 50 middleaged and old-aged normal persons and 90 patients with chronic bronchitis and emphysema.

对140例中老年人肺密度差与肺功能的相关性进行了研究，其中慢性支气管炎肺气肿病人90例，正常中老年人50例。

because the logarithmic normal distribution probability density function can better describe the distribution of the st coefficients. the logarithmic normal distribution model is used for fitting the likelihood ratio probability of the st coefficients.

由于对数正态分布概率密度函数能够更好地描述ST系数的分布情况，所以采用对数正态分布模型拟合ST系数的似然比概率。

normal annual increase of bone mineral density during two years in patients with cystic fibrosis

2年间囊性纤维化患者每年正常的骨矿物密度增加

in this article are introduced some primary mechanical properties of the normal consolidated soil and over-consolidated soil: drain density, distortion, pore water pressure and static lateral pressure coefficient etc, and comparison is made between them.

介绍了正常固结土和超固结土的排水强度、变形、孔隙水压力和静止侧压力系数等主要力学性质，并对其进行了比较。

Callus bone mineral density increased continuously in normal beagle fracture healing models.

2周时骨折端骨密度达到正常侧水平.

The density and structure of epidermal LC returned to normal 8 days after cessation of UVR.

停止照射后8天LC密度及结构基本复原.

Objective To investigate density of femoral head cancellous bone in normal and fluoride-treated rats.

目的研究正常和氟中毒大鼠股骨头松质骨密度.

The inviscid linear stability of variable density swirling jets is analyzed by normal mode method.

用正则模方法研究了变密度无粘旋拧射流线性稳定性特征.

Results Compared to the normal control group, the total cholesterol ( TC) and very low density lipoprotein cholesterol ( vLDL-C) in the CHD group were higher ( p0.01), and the high density lipoprotein cholesterol ( HDL-C) was lower ( P0.01);

结果CHD患者血清中的总胆固醇（TC）和极低密度脂蛋白胆固醇（vLDL-C）均较正常对照组高（P0.01）；高密度脂蛋白胆固醇（HDL-C）较正常对照组低（P0.01）；

Compared with the normal group and the PRF group, the average areas, mean diameter and area density of nerve fibers after operation in the RFTC group was higher ( P < 0.05), but the quantity of nerve fibers was less ( P < 0.05);

射频热凝组即时神经纤维的平均面积、平均直径和面密度高于正常组和脉冲射频组（P<0.05），但数量低（P<0.05）；

2) The seminal plasma levels of Fe and Ca were higher, the seminal plasma levels of Cu were lower in yeld men with aspermia or oligozoospermia than those with normal sperm density ( P < 0 01).

无精子及少精子症组精浆铁、钙含量高于精子密度正常组（P<001），铜含量低于精子密度正常组（P<001），锌、镁含量无差异（P<005）。

Results: 23 cases were underwent this operation in clinic within 3 years. 14 cases among them were followed up more than half year and their alveolar process cleft had been repaired with the normal bone density on X-ray.

结果：3年来临床应用该方法，治疗23例牙槽突裂患者，其中14例术后随诊6个月以上，临床观察牙槽突裂已修复，X光显示骨密度同正常骨质。

The seminal plasma alpha-glycosidase activity in obstructive aspermia group was significantly lower than those in infertility with normal sperm density group, and normal control group ( P < 0.05);

按精子密度分组，梗阻性无精子症组精浆α糖苷酶活性明显低于其他组（P<0.05）；