查询词典 X ray

A new type of high-resolution X-ray image intensifier is introduced.

提出一种新型高分辨率X射线像增强器，它是线路板检测和芯片封装检测装置中的核心器件之一，其极限分辨率制约着X射线检测装置的发展。

Both of the ESD were proportional to kVp 2.2 to kVp 2.5 and were linear proportion to mAs. Inverse square law exists in the relationship of focus-film distance, FFD, and ESD. The impacts of field size and patient thickness to ESD are negligible. Optimized operating condition is chosen to improve the diagnosis rate and to reduce the patient dose. The ESD, 0.12±0.06 mGy, performing the optimized operating condition of chest x-ray examinations, is less than both values of reference doses recommended by NRPB and IAEA.

研究结果发现，入射表面剂量随操作条件而变，以相同的条件照射，三相位X光机所造成表面剂量大约是单相位X光机的1.9倍；入射表面剂量与kVp的2.2至2.5次方成比例，与mAs约成线性正比，与焦斑至底片距离的关系大约符合平方反比定律；照野面积及身体厚度虽会影响表面剂量的大小，但其程度远低於kVp及mAs的影响。

This course mainly introduces the traditional means of examination, diagnosis and differentiation by X-ray in locomotor system.

骨伤科X线诊断学》是中医骨伤专业的基础学科，主要介绍了传统X线对骨与关节各系统疾病的检查方法，诊断与鉴别诊断。

This is a preliminary report of X-ray diagnosis on osteopetrosis ga-llinarum.

本文在国内首次报告了鸡骨质石化病的X线诊断，利用X线检查，共发现了20只本病的自然病鸡。

Result:all the cases were diagnosed as early anfh by x-ray film in 35 sites,stage i showed osteoporosis and osteosclerosis in 15 sites,stage ii showed osteosclerosis and cystic hyalomere in 20 sites.56 cases of early anfh were discovered by ct in 43 sites.stage i stelliform sign distortion and osteoporosis and osteosclerosis in 17 sites,stage ii showed meniscus sign was 26 sites.

结果：全部患者x线平片诊断早期anfh共35个部位，其中ⅰ期占15个，x线表现为骨质疏松及骨硬化；ii期20个，表现为骨硬化和囊状低密度区。ct发现早期anfh共43个部位，其中i期占17个，表现为组成骨小梁星芒结构消失，骨质疏松变和骨硬化；ii期26个，表现为囊状低密度区及骨硬化。

The construction characteristics of calcium phosphite were measured with Y-4Q system X-ray diffraction apparatus and the thermal analysis method in this paper.

本文采用热分析和x衍射方法研究了亚磷酸氢钙的结构特性，获得了亚磷酸氢钙结晶水合物的热分解特性和有关热分析数据；获得了亚磷酸氢钙结晶水合物的x衍射图谱和有关衍射数据；分析了它们与结构及其变化的关系。

PMMA compound X-ray lenses are composed of a group of 40 plano-concave elementary lenses positioned in line with axial symmetry.

用LIGA技术中的软 X射线光刻方法制作了PMMA材料 X射线组合透镜。

Then, in the following sections our progresses on X-ray spectrum diagnosis and point projection method were given, and the experimental results were laid out with discusses.

第五章是本文的核心内容，首先简要介绍X射线时、空、谱诊断的主要框架，然后分别介绍了我们在X射线能谱诊断及点投影成像应用诊断的研究进展，以及在神光Ⅱ装置第九路上的实验结果，并给出了必要的分析。

Aql X-1 is one of the Atoll sources with kHz QPO. We have studied the correlations between the frequency of kHz QPO and the shape of X-ray spectrum. Implications of our results for the accretion and quasi periodic oscillation production process are discussed.

Aquila X-1是一个具有kHz QPO的Atoll源，我们研究了其kHz QPO频率和能谱之间的相关性质，并讨论了结果对了解吸积及准周期振荡产生过程的意义。

He added that there could one day be a useful outlet to the discovery - x-ray machines that would be cheaper and safer than conventional machines that require a permanent radioactive source and a highly trained technician for maintenance.

他补充说，也许有一天这个发现能派上用场――廉价安全的X光机，不象通常的X光机那样需要永久放射源，以及高度培训过的技工做维护。

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。