讨论了二维晶体倒易点阵的物理内容和点阵点的权重。
The physical meaning of reciprocal lattice of two-dimensional crystal and weight of the lattice point are explored.
本文阐述构建16×64点阵通用智能显示单元，以及用通用智能显示单元构建LED图文显示屏系统的原理。
This paper expatiates the principle of a intelligent display unit of 16x64 lattice and the principle founding a LED large screen display system by this unit.
这是当我在使用九点阵规图时，我看到的问题之一，别人在用时也一样。
This was one of the problems I saw with the Enneagram when I used it, and with other people using it.
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