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First principles studies of nitrogen doped tetrahedral amorphous carbon .

掺氮四面体非晶碳的第一性原理研究。

Common examples include solid linear brick and solid parabolic tetrahedral elements .

常见的例子包括固体和固体线性抛砖四面体分子.

Particle system and opengl mapping technology , according to the nature of being tetrahedron , a tetrahedral formation !

利用粒子系统和opengl贴图技术，根据正四面体的性质，生成一个正四面体！

His work with tetrahedral kites led to the development of this flying machine a few years before 1910 .

1910年前，他在四面体风筝方面的研究，导致了这艘飞行器的开发。

If the exam is this problem , tetrahedral should be inscribing on four sides . Otherwise imponderable .

假如考试是这道题的话，四面体应该是正四面题。否则无法计算。