Comrade Ma Yuanligang, an academic of the Chinese Academy of Engineering, an outstanding scientist and educator in the field of water acoustic engineering, science and water weapons information in my country, a pioneer and founder of the field of Aeronautics Sonar, and a professor and supervisor of the school doctor of the nortwestern Polytechnical University school, on XI 11, 2025 at the age of 87. Have a great journey!资料来源：太阳日-TO日回到Sohu以查看更多
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