Dr Hess envisages a ray of light travelling down an optical fibre made from two materials: a core with a negative refractive index and an outer sheath with a positive one.
赫斯博士构想出一个画面，即一道光正穿越于一个由两种材料制作的光导纤维，一种是具有正折射指数的纤维核，另一种则是具有正折射指数的外围。
We were short of equipment, including laboratory materials and spare parts for X-ray machines.
我们缺乏设备，包括缺乏化验材料和X光机的零部件。
There is also a lack of bed sheets, mattresses and other consumable medical equipment such as sterile kits for surgeries, stitching materials and X-ray films.
那里还缺乏被褥、床垫和其它诸如外科手术消毒包、缝合材料和X光片等其它消费性医疗用品。
The program includes use of X-ray diffraction, electron microscopy, and other techniques for testing materials on the molecular level.
其中还涉及X射线衍射、电子显微镜及其他仪器的使用，以检测材料的分子结构。
X ray scattering and diffraction are sensitive to thin film materials that thickness is the several atomic layer to many tens micrometers.
X射线散射和衍射对于厚度为几个原子层到几十微米的薄膜材料是灵敏的。
Space division is the core for design while the excellent expression of color and ray is not only materials themselves.
空间划分是设计的轴心，而色彩与光线是最佳的表现手段，而远非材料。
A radioactive isotope of cobalt with mass number '0 and exceptionally intense gamma-ray activity, used in radiotherapy, metallurgy, and materials testing.
钴的一种放射性同位素，质子数'0，具有异常强烈的伽马射线作用，用于放射疗法、冶金和材料测试。
Some double crystal rocking curves of photocathode epitaxy materials and substrates are measured by means of X-ray double crystal diffraction in the bonding process.
用X射线双晶衍射仪测量了阴极和玻璃热粘结工艺过程中阴极材料外延层和衬底的双晶回摆曲线。
X-ray diffraction analysis: analyzing the microstructure of materials, such as phase qualitative, quantitative analysis, stress testing and structural analysis.
射线衍射分析：材料结构的微观分析，如物相定性、定量分析，应力测试，织构分析等。
The thickness gauge, as one of the applications, has succeeded in thickness measuring of the different materials in large range, and present a new application field for characteristic X-ray source.
作为应用之一制成的核辐射测厚仪，已成功地实现了在很宽的范围内对不同材质的厚度测量，丰富和扩大了这一应用领域，揭示了特征X射线新的应用前景。
It showed that X-ray diffraction technique was a good method for measuring solubility of solid solution, by which the solubility of many inorganic materials could be determined accurately.
结果表明：X射线衍射分析方法是一种测定固溶度的理想方法，这种方法还可以广泛用于无机材料固溶度的准确测定。
Nano ceramic membrane with infrared spectrum selectivity of inorganic nano materials, which can effectively block infrared ray of sunshine, and shall not affect the phone signal strength.
纳米陶瓷膜采用具有红外光谱选择性的无机纳米材料制备而成，可对阳光中红外线进行有效阻隔，并且不影响手机信号。
The method made the X-ray beam harden at first, and then the kinds of prehardening materials and correction rule of beam hardening artifacts were obtained through experiment.
该方法对X射线进行一定程度的预硬化，通过实验获得预硬化材料种类及射束硬化伪像的校正规律。
Diffraction, scattering or absorption experiments on materials using synchrotron X-radiation can provide new and more detailed structural information than using conventional X-ray sources.
使用同步辐射X射线进行材料的散射、衍射和吸收实验要比用一般X射线源的实验能提供新的、更精确、更详细的结构信息。
Structures and properties of these materials were studied by X-ray diffraction (XRD) analysis, scanning electronic microscopy (SEM) observation and differential scanning calorimetry (DSC) analysis.
并采用X—射线衍射分析、扫描电镜和差热差重分析，研究了复合蓄热材料的性能和结构。
Nanometer materials have exceptional property, the finished fabrics using nanometer materials have the function of ultraviolet and visible light resistance, anti bacteria and infrared ray resistance.
由于纳米材料的特异性能，使得经纳米材料整理的织物具有抗紫外线和可见光、抗菌及抗红外线等功能。
As X-ray detection methods which have increasingly been as an effective means for automatic detection of illicit materials now commercially available, most of these technologies are not yet mature.
尽管X射线探测方法作为一种自动探测违禁品的有效手段已经开始商业化，然而大多数技术还不是很成熟。
The analysis method of raw materials and ceramics was studied on the basis of actuating materials by X ray and recording thermoluminescence.
在X射线激励材料和记录热致发光的基础上，研究了原料和陶瓷的分析方法。
If they have the X-ray powder diffraction patternsof materials, even if being non-expert on X-ray crystal structure, they can conveniently get the index of diffraction lines and cell parameters.
对于非专业X 射线晶体结构人员，只要得到材料衍射图谱后，能很方便计算点阵常数和衍射线指标化。
It was indicated there were polymer crystalline and two solidifying peaks in the rare-earth chemical grouting materials by the electronic microscope photograph, X-ray diffraction analysis and DSC.
从电镜照片，X光衍射图谱和DSC图谱上表明了稀土化学灌浆材料有聚合物的结晶和二次固化峰的存在。
We have prepared many different polyacids, studied factors affecting the properties of these materials, and evaluated the property of water resistance and X-ray penetration of these materials.
我们合成了多种聚合酸，探讨了影响聚合酸-玻璃粉复合材料性能的因素，评价了该材料的透x线性和耐水性。
Results: SEM showed that nano TiO2 and nano ZrO2 were distributed into dental composite resin evenly and X ray electron probe showed the components of nano materials were 8.59% and 7.55% respectively.
结果：扫描电镜显示纳米二氧化钛和纳米二氧化锆均匀分布在牙科复合树脂中，X-线能谱分析显示纳米材料含量分别为8.59%和7.55%。
Without the Lessor's consent, the Lessee shall not place or install any X-ray, inflammable, explosive materials and heavy equipment in, on or to the Leased Premises.
第三款未经出租人许可，承租人不得随意在所租房间内存放任何具有放射性的、易燃、易爆的物品及重型设备。
Materials and Methods: The clinic and X-ray manifestation of analyses 3 cases.
材料与方法：综合分析3例骨梗塞的临床及X线表现。
Materials and Methods: The X-ray appearance of 7 patients with congenital defect of gastric parietal muscularis with gastric perforation by pathologically-proved were retrospectively analyzed.
材料与方法：回顾性分析经手术病理证实的7例先天性胃壁肌层缺损并胃穿孔病例的X线表现。
Rigaku 3080e3 X-ray spectrometer was applied to the determination of major and trace mineral elements in muskmelon, calibration was made by using national plant standard reference materials.
报道了日本理学3080e3型x -射线荧光光谱仪在测定甜瓜样品常量和微量矿质元素中的应用。
Materials and Methods K-value is defined based on 1000 cases of high frequency X-ray images to improve image quality by means of compressing or enlarging image grey.
材料与方法选取1000例高频X线片，针对X线图像选取不同的K值，以达到压缩灰度或扩展灰度，改善图像质量。
Materials and Methods: The clinic and X-ray features of 29 cases with esophageal submucosal hematoma proved by esophagoscopy were analyzed retrospectively.
材料和方法：回顾性分析经食道镜确诊及处理的29例食管黏膜下血肿的临床及X线食管钡餐表现。
Materials and methods: This paper chose 13 cases of trigeminal neurinoma verified by operation and pathology. The significance of the X-ray, CT and MR was analysed.
材料与方法：选择13例经手术和病理证实的三叉神经纤维瘤病人的X光手片、CT、MR分析其影像学改变。
Materials and methods: This paper chose 13 cases of trigeminal neurinoma verified by operation and pathology. The significance of the X-ray, CT and MR was analysed.
材料与方法：选择13例经手术和病理证实的三叉神经纤维瘤病人的X光手片、CT、MR分析其影像学改变。
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