查询词典 tetrahedron

Results show that the multi micro-structure units coexist in the potassium silicate glasses,and with the increase of SiO2 content,the micro-structure from silicon-oxygen tetrahedron monomer to dimmer,chain,sheet and network step by step.

结果表明：钾硅酸盐玻璃有多种微结构单元共存，并且随二氧化硅含量的增加，微结构逐步由硅氧四面体单体向二聚体、链状、层状和网络状转化。

It is interesting that one month before I went to Sedona - I bought a smoky quartz Herkimer diamond - in the shape of a star tetrahedron.

在我去Sedona一个月之前，有趣的是-我买了一个烟状的石英 Herkimer 钻石--具有星星状的四面体形状。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。