查询词典 X ray

The analysis with X-ray diffraction, scanning electron microscopy, and energy dispersive spectrometer indicates that the fine TiFe(subscript 1-x)Cr particles distribute on the surface of magnesium base, acting as some catalysis sites, which improves the hydrogenating and dehydrogenating properties.

通过XRD、SEM、EDS分析研究表明，TiFe(下标 1-x)Cr(x=0， 0.3)合金粉以细小颗粒的形式分散镶嵌在镁粉基体上成为催化活性点，改善了体系的吸放氢性能。

The application of X-RA x-ray inspection instrument in the production of all-steel radial tire .

吴绍林。 X-RA 型X 射线探伤机在全钢子午线轮胎生产中的应用。

X-ray dark-field imaging[1] using a transmission angle analyzer with a theoretically predicted thickness such as 2.124 mm for the FOV of 90 mm x 90 mm [2] with the spatial resolution of 50 microns.

使用透射分析晶体的X射线暗场成像对于90 mm x 90 mm的视场，它的理论预测厚度为2.124mm，分辨率为50微米。

This article unifies on a portal type hoist crane box beam lap's inclined X-ray dog-legged single shade crack detection , analyzed X has shot in the field of lines the mutually perpendicular two uniform thickness steel plate transmission.

本文结合一台门式起重机箱形梁上盖板的倾斜 X 射线双壁单影探伤，分析了 X 射线场内相互垂直的两块等厚钢板透照。

High energy X-rays produced by the gas near the black hole heat the ouflowing gas, causing it to glow at lower X-ray energies.

高能X射线的黑洞附近的气体热ouflowing气体产生，导致它在较低的发光X射线的能量。

In this work, nanostructure samples of La1-xCaxMnO3（x=0.2、0.3、0.4、0.5）were prepared by hydrothermal-precipitation method . The structural characterization of the powder samples were done by X-ray diffraction. XRD patterns showed that all the samples ate single perovskite-type phase withoutother impurity or secondary phase. The shape and size of samples were performed on Scanning Electron Microscopy. SEM photographs investigated that temperature of hydrothermal effects the phase of samples and alkalinity of the reaction mixture by ΔTad-T curve measurement device at low magnetic fielded

本论文采用水热共沉淀退火法制备了La1-xCaxMnO3（x=0.2、0.3、0.4、0.5）系纳米结构，用X射线衍射仪确定产物为单相钙钛矿结构，无任何杂峰及第二相；用扫描电子显微镜与透射电子显微镜分析了产物的大小和形貌，发现水热温度对产物的形成起决定作用，随着温度的升高，产物由薄膜状向丝状转变，而溶液的碱度可控制产物的形貌和大小，当碱度为6.35mol/L，水热温度为240 C时，La0.6Ca0.4MnO3的主要形貌为纳米丝并有少量纳米颗粒，纳米丝平均直径为40nm；最后测量了粉末样品在低磁场（1.4T）下的磁热效应，发现水热共沉淀退火法制备样品的最大绝热温度明显高于球磨法制备样品的最大绝热温变。

He discovered x-rays and developed x-ray photography, revolutionizing medical diagnosis.

他发现了X射线并且发展了X射线摄影技术，使医学诊断方面有了革命性进展。

It is treated with six fields (Anterior, Posterior, four obliques) positioned 60° apart around the circumference of the patient, each dual field is made up of two component beams, pointing ±15° with respect to the horizontal. The nominal energy of electron beam produced by Mevatron Ⅻ is 3MeV, and the patient is treated at a distance of 3 meters. Using Capintec dosemeter and PS-033 electron beam chamber for measurement, one moniter unit of radiation is equivalent to 0.0127cGy. Measurement of electron energy by Kodak X-omat-V verification film inside the Rando phantom at 100 cm SSD was 3.70MeV, electron energy measured at 3 meters was 3.51MeV. X-ray contamination was measured as 9.5% per six dual fields.

此种方法分别使用六个双照野，由病人的前、后、左前、右前、左后、右后各间隔60度共六个方向照射，每一双照野由水平向上和向下15度照射；荣民总医院选择3MeV电子射束来治疗病人，治疗距离为3公尺，利用擬人假体及柯达X-omat-V验证片实验得电子射束初始能量从3.7Mev变为3.51MeV，六个双照野之X光污染共达9.5%，使用Capintec剂量表及PS-033型电子射束用游离腔测量六个双照野，每一监测单位相当於0.00127 cGy。

Because of the wavelength of the x rays used, soft x ray microscopes will never match the highest resolution possible with electron microscopes.

由于使用的 X射线的波长使软性 X射线显微镜永远比不上电子显微镜可能具有的最高分辨力。

In the fist chapter of this paper, the background of laser-produced X-ray source research was given out, in which the concept of ICF and its relationship with LPXS were briefly specified.

本文第一章简要介绍激光驱动X射线源的研究背景及意义，阐述X射线研究与ICF的相关性，及课题所研究的X射线的大致范围。

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。