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In the first part, give the goal of the paper and background knowledge, and talk about the advantages of OOT. 第一部分介紹了研究的目的和背景知識，指出應(yīng)用面向?qū)ο蠹夹g(shù)開發(fā)空中交通仿真訓(xùn)練系統(tǒng)的優(yōu)越性。