trigonal
adj. 三角形的,斷面呈三角的
1. having three-fold symmetry
Complex 5,8 and 9 belong to non - centrosymmetric trigonal space group P 3 _ 121.
其中,配合物5、8和9都屬於三方晶系, 非 中心對稱的P3121空間群.
Trigonal tongue cover, generous sculpt, easy to open.
三角形舌蓋, 造型大方,方便開啟.
The structure shows a distorted trigonal bipyramidal configuration with five - coordinations to a central tin atom.
結果表明,化合物中錫原子呈五配位畸變三角雙錐構型.
A new calculating method has been proposed for the elongation and twist of trigonal prism.
建立了一種新的三稜柱配位結構伸縮變形和扭曲變形的計算方法.