本文主要给出了直和补模和H -补模的一些性质刻画。
In this paper, we obtain some properties, characterizations of? -supplemented modules and H-supplemented modules.
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。
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.
指出钢锭馍焊补技术是提高钢锭模使用寿命的重要措施之一。
The ingot repairing welding technology being one of important measures improving ingot mould service life is put forward.
利用消失模铸造压力凝固技术增强AZ91D镁合金补缩能力。
Feeding capacity of AZ91D magnesium alloy is enhanced by using pressure solidification in lost foam casting(LFC).
焊补冲压模锻造模工具钢等淬火硬化后模具材料的修补。
Progressive metal stamping mould forging weld-repair after quench hardened steel mold materials etc.
焊补冲压模锻造模工具钢等淬火硬化后模具材料的修补。
Progressive metal stamping mould forging weld-repair after quench hardened steel mold materials etc.
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