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- neutron beam attenuation 中子束衰减
- The neutron flux densities at various positions in neutron beam equipment are measured by SSNTD method. 利用固体径迹探测器(SSNTD)测量了束流装置中心轴线上不同位置处的中子通量密度。
- Abstract Objective To study the quality parameters of epithermal neutron for boron neutron capture therapy and to obtain the optimized neutron beam used in human glioma therapy. 摘要 目的 研究硼中子俘获治疗肿瘤所需超热中子束的品质参数，得到无损治疗脑胶质瘤的较佳能量中子束。
- The X-ray and neutron beams pass across the tunnel through the cargo and are detected on the other side. 射线和中子束经检查通道的一端透射物品到达另一端后被检测。
- The Spallation Neutron Source Providing the Most Intense Pulsed Neutron Beams in the World Is Being Built in Tennessee by the U.S. Department of Energy. 美国能源部正在田纳西州建造世界上最强脉冲中子束的散裂中子源。
- With high energy photon beam attenuated by the couch insert and immobilization devices, the skin sparing effect will be reduced. 当高能光子射束穿过治疗床及固定模具而衰减时，会造成皮肤免除效应降低。
- The methods of improved stability of neutron beams and prolonged service life of T-Ti target are given.The rotative target system is described in derail. 文章给出了提高关联束稳定性和延长氚钛靶寿命的方法,详细介绍了旋转靶系统。
- Spallation neutron sources are a new generation of pulsed neutron sources based on the proton accelerator,and can provide high-flux pulsed neutron beams for neutron scattering. 中子散射广泛地应用于凝聚态物质研究和应用的众多学科领域,是研究物质微观结构和动态的理想工具之一。
- The system includeS beam attenuator, single pulse selection and pulse synchronizing, beam matching, CCD Camera, frame grabber hard, monitor, computer and system software. 整个装置包括光束衰减器、单脉冲选取及脉冲同步、光束直径匹配、CCD摄像机、图像卡、计算机及监示器以及系统软件。
- Characteristic Research on Special Neutron Beam Equipment 特殊中子束流装置特性研究
- Design of an Epithermal Neutron Beam for Xi'an Pulsed Reactor 西安脉冲堆超热中子束的理论设计
- Neutron flux measurement in neutron beam equipment by SSNTD 固体径迹探测器测量束流装置内的中子通量密度
- In recent years, study of boron neutron capture therapy has been aimed at the establishment of epithermal neutron beams in order to avoid the open-skull surgury and for the treatment of deep-seated tumors. 摘要近年来，硼中子捕捉治疗之研究倾向于采用超热中子束以避免切开头盖骨之手术及进行较深层之肿瘤治疗。
- She performed on the balance beam with much grace. 她在平衡木上表演得非常优美。
- Otherwise the progressing nuclear engineering makes it possible to improve the quality of neutron beams; and combined with the developing tumor-localizing boron compounds, BNCT will be more effective and more useful for cancer treatment. 另一方面，核能技术的进步也促使中子射束的品质有所改进；配合含硼寻癌药的发展，硼捉中子治疗的效果应该可以更好，于癌病治疗上的应用?围可以更广。
- There have been significant developments in neutron capture therapy(NCT) in the past tenyears and more,especially owing to the development of the neutron beams and new NCTcompounds. 近十多年来中子俘获治疗的实验和临床研究取得了令人满意的结果，这是由于中子束的质量提高和新的用于中子俘获治疗的化合物合成成功。
- 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 beam has a thickness of 3 inches. 这根梁厚3英寸。
