查询词典 uranium ray

According to the characteristic that the definition point of the Q matrix of wave front is always located on the extremum point on the axis of the beam, a three-dimensional formula for the rectificative factor of phase in complex ray paraxial approximation is proposed, which calculates the rectificative factor of phase directly without considering the calculation of the main directions and curvatures and the rotation of the coordinates, thus simplifying the paraxial approximation calculation by the complex ray expansion method.

根据波前Q矩阵的定义点总位于波束轴上极值点的特点，提出了三维复射线近轴近似相位校正因子计算公式。该公式不用考虑主方向和主曲率的计算和坐标旋转，直接计算相位校正因子，从而简化了复射线展开法的近轴近似计算。

When using γ-ray penetrance method to measure soil water content in the big model test, several influencing factors on measurement accuracy of the γ-ray penetrance method are analyzed comprehensively.

在运用γ射线透射法测量大型滑坡模型土体含水量的过程中，为了提高试验的精度，综合分析了影响γ射线透射法测量精度的多种因素。

Methods Retrospective analysis of five cases of the X-ray diagnosis and clinical validation of periosteum hyperplasia of baby of the X-ray and clinical features, made the diagnosis, differential diagnosis.

回顾性分析5例经X线诊断及临床验证的婴儿骨皮质增生症的X线及临床特点，提出诊断、鉴别诊断要点。

Compared to commonγ-ray (x-ray mainly) flash perspectivity techniques, the technique of direct particle detection by CCD has not been widely used by researchers in other fields except several advanced research institutions abroad who use CCD arrays to constitute vertex detectors to record traces of space flight behavior of energetic particles.

相对于目前常用的γ射线透视成像技术而言，除了国外少数先进研究机构采用阵列CCD组建顶点探测器来记录高能粒子的空间飞行径迹以外，利用CCD直接进行粒子探测的技术尚未被其它领域的研究人员所广泛采用。

At present, this kind of GaAs photoconductor detector has had practical value. It can detect X-ray, gamma-ray, laser pulse successfully at the room temperature.

目前，我们研制的砷化镓光电导探测器可以在室温下对X射线、γ射线及激光脉冲进行测量，有一定的实用价值。

The surfaces of the grids were analyzed by x-ray diffraction and x-ray photoelectron spectroscopy.

然后，对样品表面进行了X—射线衍射测量和X—射线光电子能谱的测量。

Methods:[WT5BZ]Thirty-seven cases with primary tumour in department of X-ray ,Haining second hospital January 1998 to June 2000,all patients with pathology (18 cases),cytology(3 cases)and computed tomography,magnetic resonance imaging,specific photology etc.(16 cases)proved lung metastatic tumor and to studied the X-ray basic change,primary tumuorign and patholog types etc.

收集海宁市第二人民医院放射科 98年 1月至 2 0 0 0年 6月拍摄胸片的 37例其原发癌瘤，经病理( 18)、细胞学( 3)或 CT、MRI、特殊造影检查( 16)等确诊的肺转移瘤资料，对其肺部转移性病灶的基本 X线表现、原发癌肿来源、病理类型等进行分析研究。

With passive methods of CR-39 and TE/C ion chamber, the photoneutron dose at the isocenter was 0.19mSv/Gy X-ray and 0.06mSv/Gy X-ray.

在 一般的工业用或医用电子加速器中，韧致辐射靶、用于屏蔽和准直光子的材料多是高原子序数的材料。

A microcomputer is used to communicate with the controller of electron probe to control the spectrometers and the sample stages as well as the scalers. Data of X-ray intensity are acquisited when the sample stages are scanning in a certain step and time period. X-ray images were formed and shown in colors or in 3 dimensions, and have no distortion at low magnification. Hidden zonate phenomena of a picrite were found.

摘 要：用微型计算机与电子探针控制机通讯，实现对各道波谱仪和样品台的实时控制，以及对各道定标器的数据采集；在选定的样品区域上设定采样步长和时间，边移动样品台边采集各道X射线强度；用伪彩色、三维视图和内插放大等方式显示图像，解决了低倍X射线像失真问题，观察到了辉石的隐环带等现象。

A new portable low-intensity X-ray imaging scope has been developed. This scope adopts platelike X-ray image intensifier.

采用新型X射线象增强器，研制开发成功一种小型低强度X射线成象仪。

In this new architectural plan the Garden of Golgotha came to be at the centre of the new city.

Aelia 是高举他自己，并在此城内朝拜罗马诸神。

The continuous nature of peat accumulation means that terrestrial coaly rocks may provide a higher resolution and more complete record of base-level change than the time-equivalent shallow-marine strata, thus enabling the identification of highfrequency cycles that are not recorded in themarine strata.

泥炭积累的持续性质的手段，陆地coaly岩石可提供较高的分辨率和更完整的记录基准面变化的影响时，相当于浅海阶层，从而使确定的高频周期，不记录在themarine 阶层。