Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 1: Procedures for free-field calibration of hydrophones (IEC 60565-1:2020); German version EN IEC 60565-1:2020
水下声学.水听器.水听器的校准.第1部分:水听器的自由场校准程序(IEC 60565-1-2020);德国版本EN IEC 60565-1:2020