The authors show that the hyperboloid of one sheet and the hyperbolic paraboloid are ruled surfaces.
作者证实:单叶双曲面和双曲抛物面是直线曲面.
The mathematical model of the hyperboloid twist drill was introduced.
介绍了以旋转单叶双曲面作麻花钻钻尖后刀面的数学模型.
The roof of Beijing Capital Airport T 3 Terminal Building adopted large - span hyperboloid steel grid structure.
北京首都机场T3航站楼屋顶为大跨度双曲面钢网架结构,吊顶采用半开放的金属条形板.