hellmuth stachel造句

例句与造句

1. Flexible 4-polytopes in 4-dimensional Euclidean space and 3-dimensional hyperbolic space were studied by Hellmuth Stachel.
2. "' Hellmuth Stachel "'( born October 6, 1942 in Graz, Austria ) is an Austrian mathematician, a Professor of Geometry at the Technical University of Vienna, who is known due to his contributions to geometry, kinematics and computer-aided design.
3. It's difficult to find hellmuth stachel in a sentence. 用hellmuth stachel造句挺难的