直线加速器

In order to prevent all kinds of radiation produced by electron linear accelerator from bringing about harmful effect on creatures,we adopt some measures to shield bremsstrahlung X-rays and photoneutron in the design of accelerator.

为防止电子直线加速器产生的各种辐射所造成的有害生物效应，加速器实验室应采用一系列措施，对韧致辐射 x 线及光中子进行屏蔽防护。

The code considers both transverse and longitudinal movements in the accelerators using a used 4 order variable step Runge Kutta method to calculate the beam envelope of the transverse movement , the phase oscillation curve of the longitudinal movement, the energy growth, the energy distribution at the exit, and the longitudinal electric and magnetic field distributions.

L INE- ACC/ PC程序同时考虑了加速器中的横向运动与纵向运动，运用了四阶变步长 Runge- Kutta法计算了行波电子直线加速器束流横向运动包络线、纵向运动相振荡曲线、能量增长、出口能量分布和纵向电场、磁场分布。

The code considers both transverse and longitudinal movement s in the accelerators using a used 4 order variable step Runge Kutta method to calculate the beam envelope of the transverse movement, the phase oscillation curve of the longitudinal movement , the energy growth, the energy distribution at the exit, and the longitudinal electric and magnetic field distributions.

L INE- ACC/ PC程序同时考虑了加速器中的横向运动与纵向运动，运用了四阶变步长 Runge- Kutta法计算了行波电子直线加速器束流横向运动包络线、纵向运动相振荡曲线、能量增长、出口能量分布和纵向电场、磁场分布。

The code considers both transverse and longitudinal movements in the accelerators using a used 4 order variable step Runge Kutta method to calculate the beam envelope of the transverse movement, the phase oscillation curve of the longitudinal movement, the energy growth, the energy distribution at the exit, and the longitudinal electric and magnetic field distributions.

L INE- ACC/ PC程序同时考虑了加速器中的横向运动与纵向运动，运用了四阶变步长 Runge- Kutta法计算了行波电子直线加速器束流横向运动包络线、纵向运动相振荡曲线、能量增长、出口能量分布和纵向电场、磁场分布。由该程序对海关大型集装箱检测系统用加速器的 9Me V档进行调整计算，结果表明：该程序的设计结果与实际运行参数符合得很好。

Asar esult of the development of the photon-cathode microwave electron gun and thep rogress of linear accelerator technologies, of linear accelerator driven coherent harmonic generation FELs have been proposed.

由于光阴极微波电子枪的发展和直线加速器技术的进步，目前，已开始有直线加速器驱动的高增益相干谐波自由电子激光的建议。

This study investigated the neutron contaminations from medical accelerators, including electron linear accelerators and proton cyclotrons. The evaluation methods and data for neutron shielding were also provided for practical uses.

本论文探讨医用加速器－包含电子直线加速器与质子回旋加速器，在运转过程中可能发生的中子污染，并建立辐射屏蔽的评估模式与数据资料。

Two important directions in the development of proton linacs are high current proton linacs (mainly applied in nuclear power field) and compact proton linacs.

当前质子直线加速器发展的两个重要方向是强流质子直线加速器和小型质子直线加速器。前者主要用于核能领域，后者主要用于质子治疗。

According to the principal of radiobiologg and the structure, this article discusses the important meaning of the measurement Test for safe operation of the linear accelerator.

本文根据放射生物学原理和医用直线加速器的结构，全面地论述了计量检测对于直线加速器安全运行的重要意义。

The theory of medical runway microtron is expressed and its characteristics are compared with electron linear accelerator.

着重介绍了电子回旋加速器原理，重点介绍了跑道式电子回旋加速器的工作原理，并对电子回旋加速器和电子直线加速器的特点进行了比较。

The article explained the main function of medical linear accelerator and how to allocate from the development perspective of radiotherapy technology.

本文首先从放射治疗技术发展的角度对医用直线加速器的主要功能及如何选择相关配置进行了阐述；然后讨论了加速器系统的经济效益评估方法，提出以净现值法估算设备的成本效益，为加速器的合理购置提供有效的依据。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。