... 倒扇状构造 inverted fan structure 倒拱 arch invert ;jack arch ;reversed arch 倒拱形的沟底 arch invert ...
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With abroad data and rational analysis, the major work is described as follows: (1) Influencing factors of reversed arch in prestressed concrete beam is analyzed at length.
本文通过广泛的资料收集和合理的理论分析与计算，主要进行了以下几项工作：(1)较细致地分析了影响预应力混凝土桥梁起拱度的各项因素。
参考来源 - 预应力混凝土桥梁起拱度的理论计算和控制方法的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
According to the analysis, a reversed arch made of stone and cement can control the continued deformation. The measured data showed that the control method was effective.
根据分析，采用了料石底拱加半圆拱砌碹的方式控制持续变形，实测数据证明，控制方式是有效的。
With abroad data and rational analysis, the major work is described as follows: (1) Influencing factors of reversed arch in prestressed concrete beam is analyzed at length.
本文通过广泛的资料收集和合理的理论分析与计算，主要进行了以下几项工作：(1)较细致地分析了影响预应力混凝土桥梁起拱度的各项因素。
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