壁端柱

The model of adiabatic spherical to columnar hydrogen bubble growth in large leak sodium water reaction as well as the model of secondary loop pressure propagation with the one dimensional characteristic method are established under one double ended guillotine tube break in the steam generator of liquid metal cooled fast breeder reactor.

研究建立了钠冷快堆蒸汽发生器在单管束发生双端断裂情况下钠水反应中气泡从球形到柱状的变温绝热生长模型，及采用一维特征线方法建立的压力波在快堆二回路中的传播模型。模型中考虑了爆破膜、管壁弹性变形和气蚀的影响。

The effect of each parameter on distribution of static pressure and pressure loss coefficient are found out.

为了解不同的雷诺数和出流比情况下各种因素对压力损失系数的影响，对有侧流梯形扰流柱通道端壁的静压和压力损失系数进行了实验测量。

Results:77.5% of sphenoid ostia can be identified by endoscope directly.The distances from sphenoid ostia to the superior and lateral wall of sphenoid sinus,the foramen of sphenopalatine artery,the anterior wall of sella,posterior nasal septum and nasal column were 9.6±4.1 mm,9.2±1.8 mm,11.1±1.6 mm,14.7±3.6 mm,3.6±0.5 mm and 61.6±3.7 mm respectively.

结果：77.5%的蝶窦口内窥镜直接窥见，窦口距离蝶窦顶壁、外壁、蝶腭动脉孔、鞍前壁、鼻中隔后端分别为8.6±3.1 mm、9.2±1.8 mm、11.1±1.6 mm、14.7±3.6 mm、3.6±0.5 mm，距离鼻小柱根部前缘61.6±3.7 mm，与鼻底夹角31.8°±5.2°。

Contact elements are set between end plate, angles, T-stub and column flange, screw cap and neighborhood plane, bolt bar and hole.

分析中，建模时端板与柱翼缘，角钢和T形连接件与柱翼缘和梁翼缘，螺栓头与相邻板件间，螺栓杆与孔壁间都设置了反映边界状态的接触单元。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。