Radiation focused from a source outside the body is called external beam radiation.
射线聚焦来自体外称作外射线术的放射源。
Radiological protection standards for the patient in external beam radiological therapy.
体外射束放射治疗中患者的放射卫生防护标准。
Out of the group that chose radiation, approximately 30% had external beam radiation and 20% had implanted seeds.
而在其它选择放射治疗患者人群中，大约有30%使用外源性辐射治疗，20%使用植入式放射源治疗。
The scheme requires no external beam shaping element and has the potential to be designed for high-power applications.
此方案无需外加光束整形元件，在高功率应用方面较有潜力。
Methods: 114 patients with middle and advanced stage cervical carcinoma received external beam radiotherapy to pelvis plus brachytherapy.
方法：采用体外照射加腔内后装放疗，初治中晚期宫颈癌患者114例。
Patients were randomly assigned in a 1:1 ratio to receive targeted intraoperative radiotherapy or whole breast external beam radiotherapy.
病人被随机按1：1比例分为术中瘤床靶向放疗和术后全乳放疗。
The proposed photon virtual source model is suitable for accurately simulating arbitrary shape and intensity distributions of external beam.
本文提出的光子虚拟源模型能够较为精确地模拟计算任意形状和强度的外照射放射治疗射束分布。
Objective To analyze the clinical outcome of 934 primary nasopharyngeal carcinoma treated with conventional external beam radiotherapy alone.
目的分析934例初治鼻咽癌单纯常规外照射放疗的临床效果，探讨提高疗效的临床因素。
A photon virtual source model was developed for simulating arbitrary shape and intensity distributions of external beam using Monte Carlo method.
本文应用蒙特卡罗算法建立了一个光子虚拟源模型，用于模拟计算任意形状和强度的外照射放射治疗的射束分布。
The combination of external beam irradiation with brachytherapy may decrease the dose of external irradiation, so the late radiation complication may be reduced.
采用外照射与腔内近距离放射治疗可以降低外照射剂量，减轻部分放射并发症。
Objective To observe the short-term response of adjuvant intracavitary brachytherapy plus external beam radiotherapy in patients with dose-limited upper esophageal carcinoma.
目的观察外照射剂量受限的上段食管癌体外照射辅助腔内放疗的近期疗效。
Despite new developments in the surgical and radiotherapeutic fields, as well as in medical oncology, external beam radiotherapy is the cornerstone of the treatment of spinal metastases...
尽管像医学肿瘤学一样，手术治疗和放射治疗方面都有新的进展，但是外照射治疗仍然是脊柱转移最主要的治疗方法。
B. External fetal monitoring. The FHR is measured by focusing an ultrasound beam on the fetal heart. The fetal monitor interprets Doppler signals.
外监护。通过集中超声波束于胎儿心脏来描记胎心率，胎儿监护翻译多普勒信号。
External prestressing means that the prestressing bars are disposed outside the beam bodies, which in tradition are inside the beams with or without bond.
体外预应力是指预应力筋布置在混凝土梁体以外的预应力，与之相对的即为传统的预应力筋布置在构件截面内的有粘结或无粘结预应力。
We study the decay rate of solutions of beam equations with damping and external force.
研究含外力和阻尼项一类梁的横振动方程解的率减率。
Each such beam is subjected to the external loads that normally act upon it, together with the two redundant moments at its ends.
每一根这样的梁承受垂直作用于其上的外荷，以及两端的两赘余弯矩。
The rectangular beam with dual surface bonded piezoelectric actuators can achieve a pure bending deformation by an external electric field.
对称粘贴在梁结构上下表面上的压电元件在外部电场的作用下能使梁结构发生弯曲变形。
The engineering situation of Nanyang river bridge is introduced and the idea of adopting external prestress vertical tension method to reinforce t beam and design principle are proposed.
介绍了南洋河大桥的工程概况，并根据桥的使用状况提出了采用体外预应力竖向张拉法来加固旧T梁的设计构想和应遵循的设计原则。
And numerical example is adopted to explain the influence of external prestress to the vibration frequency and modality for simple beam.
通过数值算例验证了体外预应力对简支梁桥振动频率和振动模态的影响。
The relation of the degree of self-deflection of matching Gauss beam and the intensity of incidence light is similar to external electric field.
高斯光束的自偏转程度随着入射光强的变化关系与外加电场的情况相似。
The study was carried out to further investigate the simply supported reinforced concrete beam strengthened by external prestressing through experiment and theory analysis.
本文以试验梁为研究对象，采用试验与理论相结合的方法，对体外预应力加固简支梁进行了较深入的研究。
The experiment results prove that the stiffness and the ultimate strength of the steel-concrete composite box beam are increased by 54.15 % and 27.72 %, respectively, through using external tendons.
试验证实，体外索钢箱-混凝土组合梁比普通的钢箱-混凝土组合梁的刚度提高54.15%，极限强度提高27.72%。
This paper presents the study survey and strengthening mechanics of the External prestressed strengthened beam which give the reference for future strengthening design.
本文对体外预应力加固混凝土梁的研究概况及加固机理进行了阐述，为以后的加固设计提供理论参考。
The design of cantilever beam, joist and battered column in the upper structure was introduced. The anti-float of deep foundation problem and baseplate and concrete external wall were introduced.
介绍了上部结构中挑梁、托梁和斜柱的设计措施，深基础抗浮及底板外墙的处理方法。
The research results show that the stability of rock beam-pillar depends on the mechanical geometry characteristic of the system, and it has nothing to do with the external factors.
研究结果表明，岩梁-矿柱系统的稳定性取决于系统自身的力学-几何特性，与外界因素无关。
Bilateral rhegmatogenous retinal detachment after external-beam radiotherapy:Just a coincidence?
外照射放疗后发生双侧孔源性视网膜脱离：是否为巧合?。
This paper introduces how to calculate the ultimate strength of external pre-stressed concrete beam with FRP tendons by means of strain reduction.
本文采用应变折减的方法推导了体外预应力FRP筋混凝土梁承载力的计算方法，并将计算结果与试验数据进行了对比。
Using ray transfer matrix, the characteristics of the external cavity and the feedback laser beam are studied.
利用传输矩阵理论结合具体实验装置分析了外腔反馈注入系统的特性和反馈注入光束的传输特点。
Using ray transfer matrix, the characteristics of the external cavity and the feedback laser beam are studied.
利用传输矩阵理论结合具体实验装置分析了外腔反馈注入系统的特性和反馈注入光束的传输特点。
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