It showed that in contrast to single spot laser welding,twin spot laser welding can improve the weld surface quality,and increase the weld width,the thresholds.
对铝合金薄板激光单光点和双光点焊接(包括不填丝和填丝)的焊缝成形、对接间隙和准直度容许裕度以及气孔状况进行了比较,并分析了双光点能量分布的激光对铝合金焊接的影响。
Differential diagnosis of Parkinson disease and vascular Parkinsonism by single photon emission computed tomography imaging;
运用单光子发射计算机断层扫描显像诊断帕金森病和血管性帕金森综合征
Drug abuse on corpus striatum dopamine transporter: a single photon emission computed tomography imaging study;
应用单光子发射计算机体层摄影术研究药物滥用对人脑纹状体多巴胺转运体的损害
Changes and diagnostic value of ~(99m)Tc-Seatamibi single photon emission computed tomography in child viral myocarditis;
小儿病毒性心肌炎~(99m)Tc单光子断层扫描改变及其诊断价值
bjective To evaluate the single-photon emission computed tomography (SPECT) (201 Tl) for clinical diagnosis of coronary heart diseases (CHD) in the elderly with metabolic syndrome.
目的探讨单光子发射型计算机体层摄影术(铊-201核素心肌显像)对老年人代谢综合征并发冠心病的临床诊断价值。
Methods The single-photon emission commuted tomography were performed in 17 children with school phobia and 11 normal controls.
方法对17例学校恐怖症患儿(研究组)和11名正常儿童(对照组)分别进行单光子发射型计算机断层显像检查,对研究组进行儿童焦虑性情绪障碍筛选量表的评估,比较两组rCBF的差异,以及rCBF与焦虑程度的关系。
The emphasis is put on quantum dot which is described in more detail,including the realization of single-photon source,exciton emission,antibunching and bunching of biexciton emission and second order correlation of photon.
并对关键技术之一的单光子源技术进行了重点介绍,如量子点作为单光子源的研究概况,单光子发射的实现、激子跃迁、双激子跃迁引起的聚束和反聚束效应和光子相关测量等。
The equivalent energy deposited in CsI(Tl) crystal of a single photoelectron of PMT has been measured.
PMT单光电子的发射对应于晶体中的能量沉积约为 0 。
It is very important on computing central of single light line on 3D detection that using single light line for measuring object.
在单光条三维立体视觉检测中 ,光条几何中心位置的精确定标极其重要 ,它关系到三维定标的准确性 ,是其它数据计算的最基本数据。
Measurement of large displacement by single-grating and non-interference method and revision of positions of measured points;
单光栅非干涉图像法测量大位移及其地址码的修正
The method is called as single-grating double-image method.
提出了一种非接触光学法——单光栅双图像法测量物体大位移的新技术。
Laser alignment measurement model with single beam;
单光束激光准直测量系统数学模型