查询词典 X ray

The Fe57-xCo18Nb4Al2Si4B15Smx(x=0-3) amorphous alloy ribbons were prepared byvacuum arc melting and melt spinning. The influences of Sm addition on the glass forming ability, thermal stability, crystallization behavior and magnetic properties of Fe57-xCo18Nb4Al2Si4B15Smx amorphous alloys were studied by X-ray diffraction, differential thermal analyzer and vibration sample magnetometer survey.

摘 要：采用真空电弧熔炼和真空熔融甩带法制备Fe57-xCo18Nb4Al2Si4B15Smx(x=0~3)非晶合金，借助X射线衍射、差热分析以及振动样品磁强计等手段研究稀土元素Sm对制备合金的非晶形成能力、非晶热稳定性、非晶晶化行为以及磁性能的影响。

This paper discribes the theory of fluorography and digital image processing, and designs a digital radiologic imaging and processing system based on special hardware for different X-ray machines. The research includes software design and man-machine interface as well as digital image communications and archive in medicine.

本论文在X线数字理论的基础上，针对具体的数字采集和处理硬件设备，设计并实现适用于不同X光机的数字成像及后处理系统，主要包括X线数字成像系统的软件控制和人机交互应用，并在医疗数字图像的传输与归档方面进行了一些探索。

Crystal structure was determined by powder X-ray Diffraction and lattice parameters as a function of Sr-concentration x were obtained by using Rietveld method.

在80K-300K温度范围的直流电阻率测量表明，材料的电性质在x=0.2和0.3之间展示了从半导体到金属的相变。x=0.2样品已接近绝缘体-金属相变的边缘。

X-ray is a stream of such photons, used for their penetrating power in radiography, radiology, radiotherapy, and scientific research.

X光照片是X射线一束X光射线，可利用其穿透能力，应用到放射线照相术、放射学和放射疗法以及科学研究方面。

Several testing techniques for filled diamond s aredetailedly discussed,which include the applications andanalystical results of magnified observation,X-rayfluorescence,X-ray photogram,infrared spectrum,Ramanspectrum.

本文详细探讨了充填钻石检测的几项实验技术，除放大观察外还涉及了X射线荧光、X射线照象、红外光谱、拉曼光谱的应用及分析结果。

Methods The X-ray films of knee joint from lateral view of 30 normal individuals and of 116 patients with synovitis were compared for the features of synovialis.

对30例膝关节侧位X线平片的滑膜及髌下脂肪垫的正常X线表现与116例滑膜炎的X线表现进行了对比分析。

The goal of this dissertation is to process and analyze a fast X-ray spectrum measurement system based on PCI bus.

X 射线的能谱可由X 射线谱仪进行测量，本论文研究一种基于PCI 总线的高速X光谱测量系统。

Methods Through questionnaires,the annual number of X-ray diagnostic examination of the whole province was investigated,according to it,hospitals were arranged decreasingly into four levels,and proceeded the stratified random sampling on the rations of

阳性率是判断X射线诊断检查应用是否符合合理应用原则的重要指标之一。X射线诊断检查的阳性率应保持在一个合理的水平上，如果阳性率过低，表明无临床意义的X射线诊断检查的应用过多，应当采取措施予以限制。

The bone mineral density and Z score in distal 1/3 radius were measured with dual energy X-ray absorptiometry in 185 he modialysis patients, meanwhile serum parathyroid hormone, alkaline phos phatase and hand X-rays were detected.

采用双能X线骨密度测定法检测185例慢性肾衰血透患者的桡骨骨密度，计算其Z值，同时检测其血清甲状旁腺素，碱性磷酸酶和指骨X照片。

The soft X-ray flux of X class flares increases the ionisation of the upper atmosphere, which can interfere with short-wave radio communication, and can increase the drag on low orbiting satellites, leading to orbital decay.

在软X射线磁通的X级耀斑增加了离子化的高层大气，从而干扰短波无线电通讯，并可以增加拖累低轨道卫星，从而导致轨道衰减。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。