本文的研究工作是紧紧围绕着SAR数据记录器的研制展开的。
This paper is based on the research work of the SAR's data recorder.
本文紧紧围绕着非线性系统的模糊建模和辨识方法展开讨论和研究。
This article focuses on the fuzzy identification of the non-linear system to discuss.
然而，虽然竞争紧紧围绕着我们，但合作也是我们生活中至关重要的一部分。
However, although competition is all around us, cooperation is also an essential part of the society in which we live.
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