第二章主要研究酉系统的膨胀性质。
In chapter 2 we study the dilation property of a unitary system.
乙醯胆碱酉每抑制剂可强化乙醯胆碱系统，报告指出它可能对瞻妄的治疗有益。
Cholinesterase inhibitors enhance the cholinergic system and there have been reports that they might be beneficial in treating delirium.
在系统化酉空时星座设计方法的基础上，提出了一种抗信道快变的酉空时星座设计方案。
A new method of unitary space-time constellation, which can improve the influence on block error rate by fast fading, is designed based on a systematic method.
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