invert arch meaning in English

反拱
反碹
仰拱

Research on elastic slab vibration of inverted arch plunge pool under high water head and large discharge
高水头大流量作用下反拱水垫塘弹性单底板块振动规律研究
Based on the engineering requirement , much application technological research has done on the compression of frame beams , concrete stress , anchoring loss , hole friction loss and the measuring of the inverted arch . and some useful suggestion has been tendered to improve the calculating and design method and optimize the construction
结合工程需要，对框架梁的压缩、混凝土应力、锚固损失、孔道摩擦损失和反拱等的测试进行了实用技术研究，为改进计算设计方法和优化施工提出了有关建议。