1.Spiral CT (helical CT、SCT), alsocalled spiral volumetric CT, is a new kind of tech-nique which acquire the Spiral volumetric data in onecontinuous scan. The advent of SCT indicates anotherleap of CT imaging technology.
SCT(helical或spiral CT)又称螺旋容积CT,是一种通过快速连续扫描法采集螺旋体积数据的新技术,它的出现标志着CT成像技术的又一次飞跃。
2.The same and different views in the fields of scope,structure type,gasket material and mark etc,between our national standard GB4622.1～4622.3-93“spiral wound gasket”and ASME B16.20-1993“Metallic gasket for pipe flange-ring joint,spiral wound and jacketed”standard are recommended.
文中介绍了我国国家标准 GB4 6 2 2 .1～ 4 6 2 2 .3-93《缠绕式垫片》和美国机械工程师协会 ASMEB1 6 .2 0 -1 993《Metallic Gaskets for Pipe Flanges—Ring-Joint,Spiral-Wound,and Jacketed》标准在垫片适用范围、结构型式、垫片材料和标志等方面的相同点和不同点。
3.Objective:To evaluate and compare the clinical applications of multi-slice and single-slice spiral CT pulmonary angiography(MSCTPA and SCTPA) in the diagnosis of pulmonary embolism(PE). Methods:The manifestations of spiral CT pulmonary angiography with 83 cases whose were proved by clinical were analyzed retrospectively.
目的:研究并对比分析多层、单层螺旋CT肺动脉造影(multi-slice and single-slice spiral CT pulmonary angiography,MSCTPA and SSCTPA)对肺栓塞(pulmonary embolism,PE)诊断的临床价值。
4.Purpose To study the quantitative analysis of lung volume using multi-slice spiral CT (MSCT) and the the correlation of indices between CT lung volume and pulmonary function test (PFT), as well as the effect of dose、thickness、image reconstruction algorithms、upper threshold for measurements and the CT features of emphysema, so as to evaluate the usefulness of MSCT with three-dimensional (3D) postprocessing for quantitative analysis of lung volume. Materials and methods
目的:研究多层螺旋CT(multi-slice spiral CT,MSCT)肺容积定量分析及其与肺功能试验(pulmonary function test,PFT)指标的相关性,分析扫描剂量、层厚、图像重建方式、成像域值上限对测量结果的影响,及肺气肿CT 肺容积指标的特点,探讨MSCT 结合三维后处理技术肺容积定量分析在肺功能评价中的应用价值。
5.They were all made definite diagnosis by digital subtraction angiography(DSA), then underwent endovascular embolization respectively with suture, Polyvinyl(PVA), n-butyl-2-cyanoactylate(NBCA), Machenical Detachable Spiral (MDS), Guglielmi Detachable Coil(GDC) or detachable balloon in accordance with DSA findings.
经DSA检查明确病变，根据病变的血管造影影像特点，分别用丝线，聚乙烯醇(Polyvinyl，PVA)，正丁基-2-氰基丙烯酸酯(n-butyl-2-cyanoactylate，NBCA)，机械解脱微弹簧圈(Machenical Detachable Spiral，MDS)，电解脱微弹簧圈(Guglielmi Detachable Coil，浙江大学医学院研究生论文GDC），可脱球囊等栓塞材料经微导管对病灶进行栓塞。结 果
6.Objective To study the methodology and clinical value of multi-slices spiral CT coronary angiography(MSCTCA).
目的探讨多层螺旋CT冠状动脉造影(multislice spiral CT coronary angiography,MSCTCA)的成像技术及其临床应用价值。
7.In recent years, the mainly development of CT technology are from non- spiral CT to spiral CT, from single-slice spiral CT to multi-slice spiral CT, from simple source spiral CT to double source spiral CT.
近年来,CT技术的发展主要表现在:从非螺旋CT到螺旋CT、从单层螺旋CT到多层螺旋CT、从单源螺旋CT到双源螺旋CT。
8.The spiral sheet metal carry the lotus test to be apply in the bearing power test of the deep foundation soil and water table following foundation soil extensively because the ability goes into the surface of earth is following the certain depth area curve carry on test, according to the element that the spiral sheet metal carries the lotus test, through contrast with plate load test, the spiral sheet metal carries the lotus test to be applicable to the shallow storey foundation soil equally, the size of the spiral sheet metal time area concentration diagram is not big to the test result influence, the spiral sheet metal carries the bearing power of the lotus test assurance to no longer carry on the depth area curve redress.
摘要螺旋板载荷试验因能旋入地面以下一定深度进行试验而广泛应用于深层地基土及地下水位以下地基土的承载力测试，根据螺旋板载荷试验的原理，经与平板载荷试验对比，螺旋板载荷试验同样适用于浅层地基土，螺旋板面积的大小对试验成果影响不大，螺旋板载荷试验确定的承载力不再进行深度修正。
9.The outside diameter of the spiral heat exchangers (SHEs) equals to the sum of the radial distances of each outer lateral line terminal point on 2 spiral plates, i.e. D?O=r?1+r?2 . This method is not only suitable for the SHEs with semi-circled spiral plates but also for the SHEs with Archimedean spiral plates.
螺旋板换热器的外径等于两螺旋板外侧线终点的极径之和,即DO=r1+r2。 此方法不仅适用于半圆螺线的螺旋板换热器,也适用于阿基米德螺线的螺旋板换热器。
10.On the basis of theoretical analysis to the feasibility of variable stiffness natural frequency modulation for elastic supporting beam, the general designing scheme of variable stiffness modulation device, which was composed of electro-vibratory-excitation styled vibration system and of Archimedes spiral disc (A-spiral disc) transmission, was established. Analysis and calculation were carried out on the essential designing points of the transmission and force bearing status of A-spiral disc and pawl tooth at the bottom of moving abutment.
在弹性支承梁变刚度调谐固频可行性的理论分析基础上,确立了由电动激振方式的振动系统和阿基米德螺线盘(阿线盘)传动组成的变刚度调节装置的总体设计方案,并对阿线盘、移动支座下端爪齿、传动受力情况等的设计要点进行了分析与计算。
