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- radiation beam parameter 放射线参数
- Gas analysis. Determination of carbon monoxide by absorption of a non dispersive infra-red radiation beam. 气体分析。用不分散红外线射束吸收测定一氧化碳。
- Generally, radiography can detect only these features that have an appreciable thickness in a direction parallel to the radiation beam. 一般来说,仅能探测这些特征摄有相当可观的厚度方向平行于辐射束。
- The photo shutter is one of the critical parts on the front end of synchrotron radiation beam line and is usually used for absorbing high power density of synchrotron radiation. 摘要光子档光器是同步辐射光束线前端区的重要部件,其主要作用是阻档高强度同步辐射。
- The result shows that the occurrence and the position of focal switches can be controlled by changing the beam parameter and astigmatic parameter. 结果表明,可以通过改变光束参数和像散参数来控制焦开关发生的位置和产生焦开关的次数。
- Beam Parameters in the Diffracted Field of Dielectric Planar Waveguide TE0 Mode[J]. 引用该论文 郭福源;林斌;陈钰清;曹向群;上官成木生.
- With the development of 3D CRT and IMRT, the optimization of beam parameters in external beam radiotherapy has gained wide interests. 摘要随着三维适形和调强放疗技术的发展,放射治疗计划射野参数的优化问题受到了广泛关注。
- Objective To study the construction of dose calculation model and the method of automatic beam parameters selection in IMRT. 目的研究调强放射治疗中剂量计算模型的建立与射野参数自动选择的实现方法。
- Abstract Electron gun is one of the key components of coupled-cavity traveling-wave tube (TWT).Its electron beam parameters have important influence on TWT performances. 摘要 电子枪是耦合腔行波管的核心部件之一,枪的电子束参数对行波管工作性能有重要影响。
- Both techniques allow precise targeting of the cancer with multiple X-ray beams, but IMRT allows physicians to modulate the radiation dose intensity with far smaller radiation beams. 这两种技术都可以用多重X光束对癌细胞有着精确的靶向作用,但IMRT可以让医生用更少的辐射束调整放射剂量强度。
- Smulation results show that the output field distribution is related with Gaussian beam parameters, aperture size, ABCD matrix elements and misaligned parameters. 模拟结果表明输出光束场分布与光束参量、光阑尺寸、ABCD矩阵元、光阑失调量和光学系统失调量有关。
- Lead aprons shield people from radiation. 铅做的工作裙可使人免进辐射。
- She performed on the balance beam with much grace. 她在平衡木上表演得非常优美。
- Radiation reached unheard-of levels. 辐射作用已达到前所未有的程度。
- The beam of the searchlight pierced the darkness. 探照灯的光柱射入黑暗中。
- His answer was right on the beam. 他的答案完全正确。
- He struck the beam with his head. 他的头撞到梁上了。
- The earth's atmosphere filters out much of the sun's radiation. 地球大气层可以滤掉太阳的大部分射线。
- The beam has a thickness of 3 inches. 这根梁厚3英寸。