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1·This thesis mainly works on the normality of elementary subgroup of Unitary group over almost commutative rings.

本文主要对几乎可换环上酉群的基本子群的正规性进行了研究。

2·With the increase of the code rate, the production distance between the constellation of the unitary group code decreases rapidly and deteriorates the performance of the system.

随着码率的不断增加，酉空时码群中的各个星座点之间的乘积距离会变得越来越小，从而导致性能恶化。

3·Further theoretical analysis indicates that there is a conversation law only when unitary transformation symmetry group exist.

进一步的理论分析表明，只有存在一个幺正变换对称群时，才有一个守恒定律。

4·As a matter of fact, XXXX and the branches had been filing unitary (consolidated) tax returns as a group at the local tax authority where XXXX locates.

作为一个问题，事实上，年月日及分支机构已备案酉(综合)纳税申报表作为一个群体，在地方税务机关凡xxxx的位置。

5·Starting from the precise pair-wise error probability (PEP), the joint border of group coding signal error probability (SEP) in differential unitary space-time (DUST) modulation is deduced.

从精确成对错误概率(PEP)出发，推导得到了DUST调制群码符号误码率(sep)的联合边界。

6·In the third chapter we start with the Poincare group and construct various unitary representations in suitable Hilbert spaces.

第三章我们从庞加莱群着手构造合适的希尔伯特空间的多种幺正表象。