tetrahedron的复数形式怎么写？

The center of inscribed circle of tetrahedron is called incenter.四面体内切球的球心称为四面体的内心。We can now use tetrahedron and hexahedron elements in three - dimensional stress analysis.我们现在在三维应力分析中采用四面体单元和六面体单元.Each tetrahedron shar...

tetrahedron的音标：tetrahedron的英式发音音标为：[ˌtetrə'hi:drən]tetrahedron的美式发音音标为：[ˌtɛtrə'hidrən]...

n.四面体...