1·As the main conjunctive mode of the steel structure, high-strengthened hexangular bolt joint auxiliary has got widely used in production.
高强度大六角螺栓连接副作为钢结构的主要连接方式，在生产中得到了广泛的应用。
2·In this paper, beginning with the characteristic of space structure of graphite, we explain its layer structure and choose lattice in a layer which is called hexangular lattice as our studied object.
本论文从石墨的空间结构特点出发，说明了其层状结构，并且把石墨一层内的晶格即六角格子作为研究对象。
3·Sink hexangular screw inside the head;
沉头内六角螺丝；