Objective To study the method for dose calculation and beam weight optimization of intensity-modulated radiation therapy (IMRT).
目的研究调强放射治疗(IMRT)剂量计算与射野权重优化方法。
As a method of spanning space, the arch can support greater weight than a horizontal beam.
作为一种跨越空间的方法，拱能够承受比水平梁更大的重量。
The essay mainly introduces the structure principle and its application for the unloading beam of the carriage weight.
本文着重介绍了刀架重量卸荷梁的结构原理及其应用。
The tests indicated that the ultimate shear strength of it was a little larger than normal-weight concrete beam's, and larger than lightweight concrete beam.
结果表明，高强次轻混凝土梁比轻集料混凝土梁的抗剪承载力有较大的提高，且比普通混凝土梁的抗剪强度大；
Derrick-type reinforced concrete beam often appears in the framework of house walls and building walls that don't support the weight of walls, boards and so on.
王艳丽，张云龙，费以原钢筋混凝土井式梁在屋面和非承墙、板荷载的楼面结构多有出现。
And reinforced high-strength lightweight concrete beam is less ductile as compared with the normal-weight concrete beam of the same concrete strength.
纯弯段无腹筋的高强轻集料钢筋混凝土梁在破坏时表现出较强的脆性，延性要比同一强度等级普通混凝土梁略差。
This paper deals with stress analysis of continuously supported deep beam subjected to dead weight.
本文讨论连续深梁在自重作用下的应力分析问题。
The blasted objectives are scrap iron lump of several tens ton weight, reinforced concrete beam, pillar and side wall respectively. The work-condition is harsh.
这三次爆破目标是重达几十吨的废铁铊、钢筋混凝土梁、柱和边墙，其作业条件苛刻。
Large-span tension structure are extensively used in China now, because of stress fit distribution, large stiffness, light weight, easily making and installing, such as truss (beam) string structure.
大跨度张力结构，由于受力合理、刚度大、重量轻、制作安装方便，目前在我国得到了广泛的应用，例如张弦桁架(梁)结构。
Then, a hierarchy health assessment model is established based on the systematic analysis of existing city concrete beam bridge, and the weight of bottom indexes are worked out.
接着，根据层次分析法原理，建立了城市混凝土梁式桥健康状况评估的整体递阶层次结构模型，计算得到各指标的权重；
A simplified method based on fuzzy weight function is proposed in this paper. 3d taper beam is replaced with line beam in the new method, which can avoid sawtooth phenomenon.
在原有模糊权重优化算法基础上提出一种简化方法。采用线性主射束替代三维锥形射束的方法消除了锯齿现象。
The application of dual beam laser welding of different thickness blanks in automobile manufacture leads to decreases vehicle weight and reduces manufacturing costs effectively.
不等厚板激光焊接技术在汽车制造中的应用，有效地降低了车身重量，节约了生产成本。
The composites with lighter weight, higher strength, easier construction and lower cost has the better application prospect on quick strengthening bridge beam.
高强复合玻璃纤维材料具有自重轻、强度高、施工方便和造价低等许多优点，在桥梁快速加固工程中具有良好的应用前景。
The two-step method of beamforming in the time domain is divided between beam optimization weight design and finite impulse response (FIR) filter coefficients design.
时域波束形成的分步设计法分为波束优化的权值设计和FIR滤波器的系数设计两个步骤。
It adjusts the weight vectors in order to optimize the main beam and zero sinking of directional pattern real-time and automatically according to maximize exporting criterion.
其根据最大输出性能准则，实时自动调整加权向量以实现主波束和方向图零点的优化，通过优化期望用户的主波束、对干扰信号实现零陷提高系统的容量与性能。
If a beam supports a load above, the beam itself must have sufficient strength to counterbalance that weight.
一旦梁上面有负载，那么这根梁必需有足够的强度来支撑这个负载。
The demand up to the year 2000 can be satisfied by improving quality and raising the weight of rails and by expanding existing rail-and-beam mills.
提高重轨质量和单重以增加列车载重和车速，扩建现有轨梁轧机，可以满足2000年前需要。
In design of light railcar used freely supported beam, the cast steel pedestals will bear complex loads, which include weight, acceleration and wind, etc.
跨座式轻轨轨道采用简支梁结构，铸钢支座需承受所有荷载，其强度将对轻轨交通产生决定性的影响。
The loading of a tubular busbar is equivalent to that of a large-span beam, and the stress on the cross -section is mainly the tensile stress of the dead weight bending moment with much deflection.
管型母线受力状况相当于大跨度的梁，截面上的应力主要是自重弯矩的拉应力，挠度比较大。
The weight of steel for crane beam has a great proportion in the total amount consumed in the construction of the heavy-duty plant with large-tonnage cranes.
在设有大吨位吊车系统的重型厂房中，吊车梁用钢量所占比例较大，对吊车梁的优化设计对工程造价影响很大，大跨多跨重型厂房吊车梁宜采用突缘变截面简支结构。
It applies in the soft geology areas. It is made of the cattle leg, the mechanics column, provided weight, the platform face, steel roof beam, sand chest, etc.
筐架式台座是其中一种，适用于地质较软的地区，由牛腿、传力柱、配重、台面、钢横梁、沙箱等构件组成。
The invention provides a concurrent heating rolling method of light-weight thin-wall H-beam and belongs to the technology field of metal plastic processing forming.
本发明提供一种轻型薄壁H型钢补热轧制方法，属于金属塑性加工成型技 术领域。
The invention provides a concurrent heating rolling method of light-weight thin-wall H-beam and belongs to the technology field of metal plastic processing forming.
本发明提供一种轻型薄壁H型钢补热轧制方法，属于金属塑性加工成型技 术领域。
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