We suggest the measurement of wedge field depth dose for the accurate dosimetry.
为精确治疗,我们建议应测量楔形野的剂量数据。
Methods: The depth doses and peripheral doses were measurement for open field and Enhanced Dynamic wedge field as well as physical wedge.
方法:利用电离室法测量平野、动态楔形野、物理楔形野的深度剂量和射野外周边剂量。
The PDD comfarmation between virtual field and open field simplifies radiation treatment planning and increases the accuracy of wedge field therapy.
虚拟楔形野与平野的深度剂量曲线的一致性简化了治疗计划或者提高了楔形野实际治疗剂量精度。
Flow field of shock wave passing by right Angle and wedge is analyzed using numerical method and numerical interference technique combining with experimental interferograms.
使用数值计算方法和数值干涉技术并结合实验干涉图片,分析了激波过拐角绕楔形物体运动的流场。
A sort of electrostatics problem that using electric image method to solve the electric field in the wedge area between two infinite earthing metal boards are discussed using group theory.
对静电学中用电象法求解两无穷大接地金属板间楔形区域内的电场的题目,利用群论方法加以讨论,给出了可求解的条件及一般的象电荷分布。
The exact formula set for the midplane of the uniform-field wedge magnet is derived.
本文推导了均匀场楔形磁铁在中心平面的精确光学公式。
Objective to study the relation between the field size and depth of Fw (wedge factor) and its effect on the clinical usage.
目的研究楔形因子与照射野大小和测量深度的相关性,为临床准确使用该因子提供依据。
Objective:The effects of depth and field size on wedge factors were studied.
目的:探讨楔形野深度和射野大小对楔形因子的影响。
The theoretical and calculating models of field emission properties of metal cone and wedge are established.
建立了金属圆锥和楔形场发射体性能的理论计算模型。
ObjectiveThe effects of field size and asymmetric field on wedge factors are studied.
目的探讨楔形因子与射野大小及不规则射野之间的关系。
A field emission theory of metal wedge emitters was proposed.
提出楔形发射体的电子场发射理论并给出计算实例。
The stability analysis and evaluation of wedge rock mass is a difficult problem in engineering field, and there are defects in the traditional evaluation method.
楔形岩体的稳定性分析和评价一直是工程界的难点,而传统评价方法又存在种种缺陷。
This paper examines the steady-state temperature field in a wedge-shaped honeycomb sandwich panel under the condition of assymetrical heating.
本文研究非对称加热情况下楔形蜂窝板的稳定温度场。
By means of finite element method, a numerical simulation of water impact is proceeded for a three-dimensional wedge-shaped structure impacting on the fluid field with a free-surface.
本文采用有限元法,就三维楔形体结构对带自由表面流场的撞水过程进行了数值模拟。
The radiation angle and the given dose for each field were derived from this equation. The wedge angles of each field were got.
利用靶区剂量分布均匀时每个野的照射角及应给的剂量,由此求出楔形滤板应取的楔形角。
Elastic wedge model is used for analysis of excavation of homogeneous slope. On the basis of elastic plane-strain theory and the line folds to add theory, stress field of the excavation is got.
本文采用了弹性理论中的楔形体理论,对均质边坡开挖过程进行了分析,在平面应变问题的基础上结合线性叠加原理得到开挖坡体的应力场。
A novel dual field of view optical system with dual image was presented, the design methods of this system, the operational principle of beamsplitter and the optical wedge are discussed respectively.
介绍了一种双像双视场红外光学系统,对其设计方法、分光原理和分光元件进行了深入讨论。
Patterns of the diffracted field around a wedge are given and their physical meanings are discussed in depth, based upon some existing solutions to edge-diffraction problems.
本文在现有的尖劈衍射解的基础上给出尖劈边缘附近声场的清晰图象,并深入地讨论它们的物理意义。
Patterns of the diffracted field around a wedge are given and their physical meanings are discussed in depth, based upon some existing solutions to edge-diffraction problems.
本文在现有的尖劈衍射解的基础上给出尖劈边缘附近声场的清晰图象,并深入地讨论它们的物理意义。
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