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。
Modular fixture is composed of standard parts with different shape, normalization and dimension.
夹具由不同形状、不同规格尺寸的标准元件组装而成。
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