1)  hole ratio
开洞率
2)  opening
开洞
1.
Based on the practical engineering,the author introduces design and construction of opening unbounded prestressed concrete slabs,which gives reference for other projects.
结合实际工程,介绍了无粘结预应力楼盖开洞改造工程的设计、施工等技术,为预应力工程改造设计和施工提供了经验和参考。
2.
And effective methods are introduced for the reinforcement of steel beam,the connection of platform post with original steel beam,roof reinforcement and opening treatment.
结合中国民族工商业博物馆加固改造工程实例,讨论近代砖混结构加固改造设计中应考虑的若干关键问题,并介绍钢梁加固、平台柱与原钢梁连接、屋面加固、开洞处理等具体作法。
3.
To complete the task of adjusting house,remodeling of sealing in local area on top of 21st floor and remodeling of opening in partly floor on top of 22nd floor need to be done.
为完成复式住宅调整任务 ,需对 2 1层顶局部楼盖进行封洞改造 ,对 2 2层顶局部楼盖进行开洞改造。
3)  Holing
开洞
1.
Study on the loading test and finite element analysis of a holing beam;
梁腹开洞后受力分析的荷载试验及有限元计算分析
2.
Mechanical Research of Holing on Low Standard Masonry Structure Bearing Wall;
低标准砌体结构房屋承重墙体开洞的受力性能研究
4)  openings
开洞
1.
The mechanical behaviour and failure mechanism of reinforced concrete transfer girder with openings shear wall based on a 1/4 scale model experiment are discussed.
通过一榀１／４比例的钢筋混凝土上部开洞剪力墙转换大梁结构模型的试验研究，探讨该种梁式转换层结构的受力特征和破坏机理，同时，对上部开洞剪力墙转换大梁结构提供了设计建
2.
As a widely used modern structure, Flat slabs with openings can be seen in practical construction and reconstruction of building existing with more requirement for function.
无梁楼盖结构是一种应用越来越广泛的现代建筑结构形式,由于对建筑物使用功能要求的提高,无梁楼板板面开洞无论是在新建建筑工程还是已有建筑的改造工程中越来越多见。
3.
The research on the diaphragm effect of Profiled steel plates with openings in the world is reviewed.
参考国内外对开洞压型钢板蒙皮效应的研究状况,应用数值方法对压型钢板进行了开洞蒙皮效应的研究。
5)  water drilling hole
水钻开洞
6)  digging holes in ground
地基开洞
1.
For instance,the deformation and failure of foundation with caverns including the digging holes in ground and construction after digging holes have become an urgent and troublesome issue.
如在既有洞室上修建建筑(开洞地基)或在既有建筑下开挖地下洞室(地基开洞)所引起的地下洞室有害变形及地基破坏,已成为地面与地下工程建设中亟待解决的突出问题。
参考词条
补充资料：布气临界开孔率
分子式：
CAS号：

性质：均匀分布流体的分布板的最小开孔率，也是区分高压降分布板和低压降分布板的标志。郭慕孙根据散式流态化的理论和高压降分布板的概念，导得分布板的临界开孔率式中，流量系数c=0.99[d0/t)-0.125；L为床高；g为重力加速度；u为表观线速；ρf为流体密度；△ρ为颗粒与流体的密度差；d0为分布板孔径；亡为分布板厚度，对于具有散式特征的某些细粒流化床；n=4.65；εmf=0.4。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。