20 Hz～2 000 Hz矢量水听器校准规范
Calibration Specification for Vector Hydrophones in Frequency Range 20 Hz to 2 000 Hz

2012-03-20

1 Hz～2 kHz标准水听器
Standard Hydrophones in the Frequency Range 1 Hz to 2 kHz

2007-02-28

Underwater acoustics - Hydrophones - Properties of hydrophones in the frequency range 1 Hz to 500 kHz
水声声 - 水听器 - 水声器在频率范围内的特性1 Hz至500 Khz

2017-04-10

Underwater acoustics. Hydrophones. Properties of hydrophones in the frequency range 1 Hz to 500 kHz
水下声学 水听器 频率范围为1 Hz至500 kHz的水听器特性

2017-08-11

1 kHz~10 kHz矢量水听器校准规范(自由场比较法)
Calibration Specification for Vector Hydrophones in Frequency Range 1 kHz to 10 kHz(Free-field Comparison Method)

2016-11-25

1 Hz～2 kHz标准水听器(密闭腔比较法)
Standard Hydrophones in the Frequency Range 1 Hz to 2 kHz(Closed-chamber Comparison Method)

2017-11-20

高静水压下20 Hz～3.15 kHz标准水听器(耦合腔互易法)
Standard Hydrophones in the Frequency Range 20 Hz to 3.15 kHz under High Hydrostatic Pressure(Acoustic Coupler Reciprocity Method)

2010-03-02

Underwater acoustics - Hydrophones - Properties of hydrophones in the frequency range 1 Hz to 500 kHz (IEC 60500:2017); German version EN 60500:2017
水下声学.水听器.频率范围为1Hz至500kHz的水听器的特性（IEC 60500-2017）；德文版EN 60500:2017

2018-03-01

Amendment 1 - Magnetic materials - Part 6: Methods of measurement of the magnetic properties of magnetically soft metallic and powder materials at frequencies in the range 20 Hz to 100 kHz by the use of ring specimens
修改件1.磁性材料.第6部分:使用环形试样在20Hz至100kHz频率范围内测量磁性软金属和粉末材料磁性的方法

2021-07-05