adj.双棱锥

A trigonal bipyramid has three equatorial and two axial positions. 一个三角双锥体有三个赤道位和两个轴向位。

The structure shows a distorted trigonal bipyramidal configuration with five-coordinations to a central tin atom. 结果表明,化合物中锡原子呈五配位畸变三角双锥构型。

Diamond crystats are intermediate between dihydrate and monohydrate calcium oxalate,two crystal forms:pyramide and bipyramid,therefore,it is not dihydrate calcium oxalate. 本研究发现菱形晶属于一水和二水草酸钙的中问晶体,菱形晶有两种晶体形式,单锥和双锥的结晶形式,菱形晶不是二水草酸钙。

The crystal structure has been determined by X ray single crystal diffraction, showing a distorted trigonal bipyramidal configuration with five coordination for the central tin atom. 通过元素分析、红外光谱和氢核磁共振谱对其结构进行了表征。用X-射线单晶衍射测定了该化合物的晶体结构。

The result shows that the mix of W+C prepared by the the bipyramid blender has high chemical carbon?less the Fe content . the bond strength of WC block is small and the proudtion efficiency is high. 结果表明双锥混合器生产效率高、碳化钨粘结度低、化合碳也高,完全可以替代用球磨机配碳的传统工艺。