Under HRTEM, the lattice fringes of the mesophase pitch carbon are arranged regularly, is a long range ordered crystal structure, and the preferred orientation is high.
在HRTEM下，中间相沥青炭的晶格条纹排列规整，是一种长程有序的晶体结构，晶化程度很高。
2
The diagonal double pitch curved lattice grid system is used in the country for the first time.
斜拉双坡曲面钢网壳结构体系，为国内首次采用。
3
In this work, a tight pitchlattice and mixed fuel assemblies pressured heavy water reactor concept was investigated.