The paper also gives some corrections to several theorems and their proofs about the dimension of the modular lattice ih the books" Modern Algebra" by Wu and "Abstract Algebra" by Xu.

并对“近世代数”（吴品三）、“抽象代数”（徐诚浩）中有关模格维数几个定理证明的遗漏，作了某些补证。

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In addition, most of the LED lattice screen is fixed in dimension and cannot be adjusted according to need.

另外，LED点阵屏尺寸多为整块固定的，不能根据需要进行调整。

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In addition, the modularized led lattice screen makes the screen to be assembled to needed dimension in actual use.

同时，模块化的可拼装LED显示屏，使得屏幕尺寸大小可以根据实际需要来拼装，提高实用性。

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