1·Thus one has a triangle in, a tetrahedron in, etc.
因此在空间中是一个三角形，空间中是一个四面体，等等。
2·A tetrahedron with four equilateral triangular faces.
有四个等边三角形面的四面体。
3·This is the website for the Tetrahedron Information System.
这是四面体信息系统的网站。
4·So, this forms a tetrahedron, which forms the sp3 hybrid orbitals.
这就形成了一个四面体，它是由sp3杂化轨道形成的。
5·The internal structure of silica has a pyramid(tetrahedron) unit.
硅的内部结构是一个四面体。
6·The tetrahedron triangle module is a solid module with four planes;
四面三角体模块是有四 个平面的立体模块；
7·Play method: the tetrahedron triangle module toy reverses without barrier.
玩法：四面三角体模块玩具无障碍翻转。
8·Now you are equipped for the development of the magical RNA/DNA star tetrahedron!
现在你为不可思议的RNA/DNA星四面体整装好！
9·Now you are fully outfitted for the development of the magical RNA/DNA star tetrahedron!
现在你为不可思议的RNA/DNA星四面体完全整装好！
10·A new bank protection technology using tetrahedron like penetrating frame groups is introduced.
介绍一种新型护岸技术——四面六边透水框架群护岸。