征

This paper studies on the fluctuating pressure time-history identification with the background of this system, and the fluctuating wind pressure on the roof of Shenzhen citizen center is identified. In this paper, we do some research in mechanics on the proper orthogonal decomposition method.

本文对荷载本征模态分解法进行了机理性研究，对不同的插值方法、不同的结构体形以及选择不同阶数的模态进行风压识别对识别结果的影响进行了细致的分析。

The random wind pressure field of a pitched roof is predicted in terms of the proper orthogonal decomposition technique.

讨论了本征正交分解方法在重建双坡屋盖随机风压场上的应用。

The result which could be verifried to confirm the unitary nature and orthonormality is got. So it proves that the EFM is correct and concise on the representation theory of group.

计算结果表明所得母分系数满足幺正性、归一性，证明了本征函数法处理群论问题的正确性和简洁性。

Continuous orthonormalization method, this method avoids those major difficulties with Henyey method and parallel shooting method.

数值计算求解时，我们改进和发展了连续正交归一化方法，设计出了我们自己的计算太阳振动频率和本征函数的程序。

Objective: To reduce the misdiagnosis rate of osteoid osteoma by analyzing its symptoms, signs, and X-ray findings.

目的：分析骨样骨瘤的症状、体征及X线特点，减少该病的误诊误治率。

Disappearance of the "asterisk sign" and appearance of high density osteosclerosis in various shapes are early CT features of AvNFH.

股骨头内"星芒征"消失，出现多种形态的高密度硬化区是本病的CT早期征象。

Radiographic signs of the disease are increase in density of bilateral bones, osteosclerosis with thickening of the cortex and stricture or obliteration of the medull...

本病的X线征为双侧骨骼的密度增高和骨质硬化，骨皮质变厚，骨髓腔变窄甚至闭塞。

Results Early signs of ANFH using CT showed that, in 38 femoral heads 31 cases, there were radiate star shape of high-density osteosclerosis of the trabeculae in 13 femoral head.

结果：早期ANFH的CT表现：31例38个股骨头，其中13个股骨头骨小梁呈放射状高密度的"星状征"，骨小梁境界清楚、锐利，属Ⅰ期；25个股骨头表现为骨硬化，骨小梁结构消失、模糊不清，骨密度减低及囊性改变，属Ⅱ期；并有5个股骨头在Ⅱ期影像学改变基础上出现软骨下骨折及轻微塌陷，属Ⅲ期。

Results Early signs of ANFH using CT showed that, in 26 femoral heads in 21 cases, there were radiate star shape of high-density osteosclerosis of the trabeculae in 8 femoral head.

结果 CT早期表现：2 1例 2 6个股骨头，其中 8个股骨头骨小梁呈放射状密度增高的"星状征"，骨小梁境界清楚、锐利属Ⅰ期；18个股骨头表现为骨硬化，骨小梁结构消失、模糊不清，骨密度减低及囊性改变，属Ⅱ期；并有 3个股头在Ⅱ期影像改变基础上出现软骨下骨折及轻微塌陷，属Ⅲ期。

Results Early signs of ANFH using CT showed that, in 38 femoral heads 31 cases, there were radiate star shape of highdensity osteosclerosis of the trabeculae in 13 femoral head.Twentyfive femoral heads showed osteosclerosis and trabeculae structure disappearing and vague,incoordinately lowostedensity area and cyst change.There were fracture under the cartilage and light subsid in 5 cases.

结果：早期ANFH的CT表现：31例38个股骨头，其中13个股骨头骨小梁呈放射状高密度的"星状征"，骨小梁境界清楚、锐利，属Ⅰ期；25个股骨头表现为骨硬化，骨小梁结构消失、模糊不清，骨密度减低及囊性改变，属Ⅱ期；并有5个股骨头在Ⅱ期影像学改变基础上出现软骨下骨折及轻微塌陷，属Ⅲ期。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。