阴角 meaning in Chinese

inside corner
reentrant corner

Special - shaped columns frame is a popular structure and will be widely used in house buildings . but because much higher stress exists in the discontinues parts and corners of the cross section , and the severe destruction under earthquake happens to the r . c . special - shaped column frame , the design and usage of the r . c
异型柱框架结构是目前住宅建筑中颇受欢迎的一种结构形式，具有很广泛的应用前景，但由于异型柱截面的阴角阳角部位存在应力集中现象，地震时破坏较严重，各地对异型柱框架结构的设计和使用进行很严格的控制。