acoustic system短语¹⁴⁴⁹⁷²⁺² 基本例句 声系统 The study of the underwater wideband target emulator plays a very important role in improving the underwater acoustic system technology and verifying the performance of the underwater acoustic system. 研制宽频带水下目标模拟器对于开展水下对抗技术的研究和验证水下声系统的性能具有十分重要的意义。 cnki