密度变化

激光热效应引起的流场密度变化采用完全Navierstokes方程计算。

The air density variation is calculated with the complete Navier-Stokes equations .

激光加热引起的气流扰动及气体介质密度变化采用完全的Navierstokes方程描述，以便考虑各种不同因素的影响。

The thermal turbulence motion and the air density variation are governed by the complete Navier Stokes equations , so that the variety factors could be in consideration .

晚秋月份种群密度变化资料用Fuzzy法统计分析表明，10、11月每天进入畜舍的虫口相对密度分别为7～18只与6～12只。

Adult density was 7-18 and 6-12 in Nov by Fuzzy analytic method .

结果表明，流体水银的结构因子S（k）的精确性和可靠性有了很大的提高，并获得了流体水银的配位数和配位距离与密度变化之间的准确关系。

Reliable relations of the coordination number and the correlation distance with the density of fluid Hg were obtained .

根据扇形束CT射线的密度变化关系和面积系统矩阵的计算原理，提出了将密度因子加入系统矩阵的计算方法；

Developed a method of introducing weighting factor to area system matrix for getting more accurate system matrix in fan beam X-ray CT ;

进一步利用GPS速度场计算华北地区GPS地壳应变率场及应变能密度变化率场。

Using the GPS velocity field , we estimate the annual accumulations of strain rate field and strain energy density field .

糖尿病大鼠牙槽骨中TGF-β1和TNF-αmRNA表达与骨密度变化相关性研究

The Correlation between Bone Density and Expression of TGF - β 1 and TNF - α mRNA in the Alveolar Bone with Experimental Diabetes

资料与方法28例经手术及病理证实的肝门区胆管癌的螺旋CT平扫及多期增强扫描资料，重点观察肿块相对于肝脏的密度变化。

Materials and Methods 28 patients with pathologically proven hilar cholangiocarcinoma were performed unenhanced , multi-phase dynamic contrast enhanced CT scanning , attenuation of tumor relative to the liver was mainly observed .

群体感应（QS）广泛存在于细菌中，是细菌根据细胞密度变化调控基因表达的一种机制。

Quorum-Sensing ( QS ), which regulates gene expression depending on population density , is universal in bacteria .

正常人腰椎骨密度变化&445例QCT测量分析

Normal Spinal Changes of Bone Mineral Density in 445 Individuals : Assessment by Quantitative Computed Tomography

本文采用局部组成概念与状态方程相结合的方法，对vanderwaals单流体混合规则中的校正参数K（ji）进行了研究，得到了一个随密度变化的局部组成混合规则。

The method of the combination of local composition concept with equations of state has been used in the study of the correction parameter kji in the Van Der Waals one fluid mixing rule .

根据冻土试样震融沉前后CT测试数据及扫描图像，定量地分析了土样结构微裂纹发展、密度变化规律，并对冻土特有的震融沉形成机理给予解释。

The variation laws of structural hair cracking and the characteristics of density for frozen soils are analyzed quantitatively based on the CT scanning results of frozen silt clay before and after dynamic triaxial test . And the formation mechanism of seismic-thaw-settlement of frozen soils is interpreted .

模型不仅在控制方程中计及了密度变化，而且在控制方程中加进了浮力项，并对湍流Schmidt数也作了浮力修正。

In the control equations of the model density variation is considered . The buoyancy terms in the control equations are included . Buoyancy revision of Schmidt number also be carried out .

以加入WGA后，精子憩液在20分钟内的光密度变化值作为衡量精子膜WGA受体的指标。

The changes of optical density ( OD ) within 20 minutes of sperm suspended fluid induced by adding WGA are taken as the parameter of WGA receptor ( WGA OD value ) .

目的观察糖尿病性骨质疏松症患者空服血糖（FPG）、糖化血红蛋白（HbA1c）、体重指数（BMI）和骨密度变化，并探讨护理对策。

Objective To investigate the changes of bone mineral density ( BMD ), fasting plasma glucose level ( FPG ), glycosylated hemoglobin level ( HbA1c ), and body mass index ( BMI ) in the control group and diabetic patients and to probe the nursing measures .

反应堆功率运行时，燃耗变化会引起堆外中子通量密度变化，造成RPN核功率测量系统测得的反应堆功率与实际功率出现偏差。

When the reactor is operating , the variation of the burn-up of the fuel will cause vari-ation of the neutron flux , which can make the core power measured by the RPN nuclear power system deviate from the actual power .

体重质量指数与557例绝经后妇女骨密度变化的关系研究

Relationship between body mass index and BMD in 557 postmenopausal women

小径阔叶树于容积密度变化规律的研究

The Law of Variation in Bulk Density of Small-diameter Broad-leaf Trunk

大气密度变化对卫星返回轨道参数的影响

The effects of atmospheric density variance on return trajectory parameters of satellite

上海中心老城区蝇类种群密度变化分析

Survey and Analysis on Variety of the Flies Population Density in Shanghai

绝经妇女桡骨骨密度变化的多因素分析

Multiple regression for radial bone mineral density in postmenopausal women

闽北毛竹林密度变化相关因子的动态规律研究

Studies on the Dynamic Laws of Density Change Correlation Factors of Phyllostachys

佝偻病大鼠模型建立及骨密度变化的实验研究

Establishment of Rickets Rats Model and Study of Its Bone Mineral Density

完井中套管内液体密度变化对环空混窜的影响

Influence of Inside Casing Liquid Density Variation on Annulus Channeling While Completion

全年种群密度变化呈单峰型。

The yearly population density fluctuates in a single peak .

甲状腺机能亢进症131Ⅰ治疗前后骨密度变化分析

Change Analysis of Bone Density of Hyperthyroidism before and after 131 ⅰ Therapy

红细胞衰老过程中的密度变化

Changes in density of erythrocytes during in vivo aging

105例Ⅱ型糖尿病患者骨密度变化的分析

Analysis of variation of BMD in 105 patients with type 2 diabetes mellitus

肥胖儿童骨密度变化及其影响因素分析

The change of bone mineral density and its influencing factors among obese children

人工绝经早期的骨密度变化

Effects of short-term induced menopause on bone mineral density