查询词典 X ray

The elemental composition of fly ash and the heavy metals distribution was studied by using energy dispersive X-ray spectroscopy.

介绍了用于X射线能谱分析的飞灰颗粒表面和断面样品的制作方法。

Methods 15 Mongrel dogs were subjected to be lengthened of the unilateral or bilateral mandibles using the home made type MS 1 mandibular distracter,and the regular X ray examinations were made.

采用自行研制的MS 1型内置式下颌骨骨牵引延长器，对 15只犬分别进行下颌骨单侧及双侧骨牵引延长实验，X线定期检查。

The resulting materials were characterized by x-ray diffraction, Fourier transform infrared spectroscopy, Nuclear magnetic resonance and Photoluminescence. Those spectra reveal that by adding SiO2 to YAG:Ce precursor, the lattice constant decreases while vacancies are generate due to the co-dopant ions (Si4+) replaces in the place of Al3+ sites of YAG:Ce system. YAG:Ce phosphors with Y3+ dodecahedral site replaced by Ce3+ and diffused effectively as an activator, as a result the photoluminescence intensity increased about ~20-30%.

研究成果显示，掺杂SiO2之YAG：Ce萤光粉经过高温热处理后，由X光绕射、红外线吸收光谱仪以及核磁共振可以得知，当SiO2添加量增加时，YAG：Ce晶格常数会因为Si4+取代Al3+的四面体晶格位置而变小，同时产生将YAG：Ce之铝离子空位缺陷，使活化中心更有效地在YAG：Ce主体中扩散取代Y3+的十二面体晶格位置，提高其发光性质约20~35%。

Gastaldi and co-workers have observed two types of contrasts in Al-Pd-Mn IQCs: black-white double-lobe and loop-shaped, by using X-ray topography, and the facetted dodecahedral pores by phase-sensitive radiography.

Gastaldi领导的小组在结合利用X射线形貌术以及相位敏感成像术研究Al-Pd-Mn二十面体准晶单晶中的缺陷时发现两种衬度，其中已知黑白双瓣衬度是由于准晶中的五角十二面体空洞引起，而对于环形衬度则除了知道退火行为不同于位错从而不太可能是位错圈外，基本上对其缺陷的几何及性质不甚了解。

It has been discovered that there is 2.2% dolomite in the sediments through the analysis of X-ray diffraction.

对样品所做的X-衍射矿物物相定量分析表明其中含有2.2%的白云石。

This paper also studied the relation between structures and properties of PVAC/PP composite filaments by X-ray and double refraction.

同时用X射线衍射及双折射等方法研究了PVAC／PP复合纤维的结构与力学性能的关系。

Methods A retrospective analysis about x ray examination and diagnosis was performed in 102 patients with pharyngeal dysphagia.

对所收集的102例咽期吞咽困难病例的X线检查和诊断方法进行回顾性分析。

X ray recording examination is the best method in dianosis of pharyngeal dysphagia at present.

X线录像检查是目前诊断咽期吞咽困难的最好方法。

The development dysphasia of the hip is an illness commonly found among children. In the conventional treatment to DDH, the modification of the bone position is based on the analysis of feature parameters to 2D X-ray photo and the surgical result is highly dependent upon surgeon s personal experience.

儿童发育性髋脱位是一种常见的疾病，传统的治疗手术基于二维X光片分析特征参数，手术过程中凭医生经验确定调整位置，手术的质量和效率都有较大的提升空间。

A methodology for alignment of an X-ray image and a CT image, based on the Chamfer 3-4 distance transform and simulated ann ealing optimization algorithm is presented.

提出了一种基于Chamfer 3-4 距离变换和模拟退火优化的方法，用于X射线图像和CT图像间的配准。

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。