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总类汪德昭教授题词…………………………………………………(921-21)《马大献科学论文选》.自叙……………………………………………………………………………………………………(92.1-2ii)中国声学学会理事长关定华教授贺文………………………………………………………………
General Category Professor Wang Dezhao Inscription ......................................................... (921-21) “Ma Da Xian scientific papers selected.” Self-criticism ....................................... ............................................................................ (92.1-2ii) Professor Guan Dinghua, Chairman of Chinese Acoustics Association He Wen ................................. .......................................