查询词典 x-rays

XRD,X-ray EDS analysis,AFM and Fourier transform infrared spectroscopy were employed to characterize PbSe thin films. The results show that all of the films were heteromorphy and the growth temperature has effect to the diffract peaks of the films. The contents of PbSe thin films by PLD consisted with the targets,and realizing thin films deposited with same constitutes; the films had rather flatness surface and compact structure; the peak-to-tail roughness of PbSe thin films surfaces was less than 200nm;they had sensitivity to light of a specified wavelength and obvious absorption edge at 5μm corresponding to band-gap width of PbSe thin films;light of wavelength less than 5μm was strongly absorbed.

通过脉冲激光沉积法在Si(111)和SiO2玻璃基片上制备了PbSe薄膜。X射线衍射、X射线能谱、原子力显微镜、傅里叶变换红外光谱仪测试结果表明：所有制备的薄膜都为多晶薄膜，发现薄膜生长温度对薄膜衍射峰有一定影响；PLD法制备的薄膜的成分与靶材的基本一致，实现了同组分沉积；所有薄膜表面比较平滑，表面不平整度小于200nm，结构比较致密；PbSe薄膜对红外光具有敏感的响应特性；在波长为5μm处存在有明显的吸收边，此吸收边对应于直接带隙PbSe材料的禁带宽度；对应于波长小于5μm的红外光，PbSe薄膜存在有明显的强吸收。

Besides, from the microanalysis － Energy Dispersion X-ray Spectrometer, we found that the Al concentration is about 5?6％ inside the hillocks, that is less than ?

此外，从 X 光微区分析的能量散布光谱仪（Energy Dispersive X-ray Spectro- meter）量测中可以发现，该结构的铝组成浓度约为 5？

The great hooded fireplace is Indiana limestone: 14' tall x 6' wide x 3' deep.

这个巨大的带头巾的壁炉印地安那州的石灰石：14 '高×6英尺宽x 3 '深。

X-linked ichthyosis is a sort of sex linked recessive inherited diseases. It is one of the most common congenital metabolic diseases of the mankind.

X-连锁鱼鳞病(X-linked ichthyosis， XLI)是隐性遗传病，是人类最常见的先天性代谢疾病之一。

The results of XRD (X-ray diffraction), SEM show that the Al-Cu-Fe quasicrystalline coating is dense and uniform, by preparing from Al70Cu20Fe10 powders with particle size of 325 mesh (4.5μm). After annealing under vacuum condition of 800℃ for 2 hours, it is observed that the icosahedron phase is the major phase together with a few β-Al phase.

由X-射线衍射XRD(X-Ray Diffraction)、扫描电镜SEM分析得出：采用原子比为A170Cu20Fe10、粒度为-325目的粉末制备的涂层，在800℃下真空退火处理2h后，结构均匀致密，二十面体准晶相含量高，并只含有少量的β相。

Ghost creates an image file using a buffer of size x where x = number of KB.

Ghost使用大小为x KB的缓冲区创建映像文件。

The thermal and magnetic hysteresis is observed in the (1-x)La2/3Ca1/3MnO3/ xCu(NO3)2 system. Using the assumption of the "MM/ML/MM"structure, we give the qualitative indicant about these phenomena and the LFMR effect.

分析了(1-x)La_2/3Ca_1/3MnO_3 / x Cu(NO_3)_2体系中的热滞和磁滞现象，并用"磁性金属/中间层/磁性金属"结构假设，定性解释了这些现象和体系中的低场磁电阻效应。

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。

The suitable ionization chamber for the absorbed dose measurement in X-Knife is provided.

对X刀的输出剂量进行测量时，采用不同有效体积的电离室，对测量结果进行了比较，分析，提出了适合X刀的输出剂量测量的电离室。

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。