GB/T 17312-1998
声级计的无规入射和扩散场校准
Random-incidence and diffuse-field calibration of sound level meters
- 实施日期
- 1998-12-01
- ICS 分类
- 33.140
组合使用关键词、标准类型、状态与 ICS 分类,快速定位所需国家标准。
找到 70,494 条
GB/T 17312-1998
Random-incidence and diffuse-field calibration of sound level meters
GB/T 17309.1-1998
Methods of measurement on receivers for television broadcast transmissions--Part 1:General considerations--Electrical measurements at radio and videofrequencies and measurements on displays
GB/T 17308-1998
Definitions of parameters for simplified automatic measurement of television insertion test signals
GB/T 17307-1998
Assignment of the uses of insertion lines in the field-blanking interval in television broadcasting
GB/T 3241-1998
Octave-band and fractional-octave-band filters
GB/T 17306-1998
Standards for packaging--Consumer requirements
GB/T 17302.1-1998
Import licence message of the People’s Republic of China
GB/T 17304-1998
Specification for CAD general technology
GB/T 17303.2-1998
Invoice message--Part 2:Commercial invoice message for international trade
GB/T 17303.1-1998
Invoice message--Part 1:United Nations standard invoice message
GB/T 17302.2-1998
Export licence message of the People’s Republic of China
GB/T 17305-1998
Import management certificate form for general goods and mechanical and electronic products
GB/T 17301-1998
Earth-moving machinery--Operator station and maintenance areas--Bluntness of edges
GB/T 17299-1998
Earth-moving machinery--Minimum access dimensions
GB/T 17300-1998
Earth-moving machinery--Access systems
GB/T 17291-1998
Petroleum liquid and gas measurement--Standard reference conditions
GB/T 17287-1998
Liquid hydrocarbons--Dynamic measurement--Statistical control of volumetric metering systems
GB/T 17286.2-1998
Liquid hydrocarbons--Dynamic measurement--Proving systems for volumetric meters--Part 2:Pipe provers
GB/T 17286.1-1998
Liquid hydrocarbons--Dynamic measurement--Proving systems for volumetric meters--Part 1:General principles
GB/T 15514-1998
Codes for ports and other locations of the People’s Republic of China