With the rapid development of national economy and technology, new trends have taken place in the modern power grid and load structure.
随着国民经济和科学技术的蓬勃发展，现代电网与负荷构成出现了新的变化趋势。
There are new trends in the grid and load structure of modern power system, leading to various power quality problems which have aroused great attention of power departments and users.
现代电力系统的电网结构和负荷构成出现了新的变化趋势，随之带来的电能质量问题逐渐引起电力部门和用户的高度重视。
Underpinning beam should be designed before the bearing wall removed in brick wall load structure.
砖混结构建筑物拆除承重墙，需进行墙体托换的加固设计。
This dissertation studies the variable structure characteristic of load, and offers corresponding modeling methods after analyzing the reason of changing load structure.
本文研究了负荷存在的变结构特性，分析变结构的原因并提出了相应的建模方法。
For fast and accurate design and production of lumped constant bandwidth frequency-hopping(FH) narrowband filter, a load structure changing with frequency is introduced.
为了快速准确地设计并制作恒带宽窄带集总跳频滤波器，提出了一种随频率变化而 变化的负载结构。
Load structure method was used for the lining of the secondary support's long-term safety assessment.
采用荷载结构法对二次衬砌进行了长期安全性评估。
Load structure method has been applied in analysis of integrated lining structure analysis for many years without considering supporting force on the structure.
对于整体式衬砌，多年来均用荷载结构法进行结构检算，计算中不考虑施工支护受力，当前的标准图均按此法编制。
In the second chapter, we use the heat supply tunnel design of Beijing as the research background. We choose the "load-structure" mechanical model as the calculation model.
第二章以北京热力隧道为研究背景，确立以“荷载—结构”力学模型作为北京热力隧道衬砌计算模型。
Basing on the rock mechanics property of shallow tunnel under unsymmetrical pressure, a load-structure model is used to calculate internal force and displacement of tunnel lining.
根据浅埋偏压隧道围岩的力学特性，采用荷载结构模型计算隧道支护内力及变形。
Basing on the rock mechanics property of shallow tunnel under unsymmetrical pressure, a load-structure model is used to calculate internal force and displacement of tunnel lining.
根据浅埋偏压隧道围岩的力学特性，采用荷载结构模型计算隧道支护内力及变形。
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