有目的地主动从系统中发射声波的声呐称为主动声呐 主动声纳利用接收换能器基阵接收目标自身发出的噪声或信号来探测目标的声呐称为被动声呐按声呐装置的体系分类 战术指标—能够搜索和探侧目标的方位角和高低角范围
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Introduction
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This lecture gives a brief introduction to the geography of America including Geographical feature2. Climate3. Major cities ⑧ The New States Alaska 阿拉斯加州 Hawaii 夏威夷州 Trump Building E
2 Structure of the Traditional college EssayIntroductory paragraphIt should start with several sentences that attract the reader’s interest It shouldadvance the central idea, or thesis/point The thesi
Click GLOBAL CULTUREPhysicalNATIONAL CULTURE ANSWERS IINTERNAL CHALLENGESNATIONS TRADITIONALLY SHAPE ORGANIZATIONSTHINK OF CULTURE AS AN ICEBERG:you see it but perhaps not the important partsUniversal
The structure of la
Chapter 7: Memory
Chapter 9: Language
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