61672资源列表

[国外标准] BS EN 61672-3-2006 Electroacoustics — Sound level meters — Part 3 Periodic tests

[国外标准] BS EN 61672-2-2003 Electroacoustics. Sound level meters Pattern evaluation tests

[国外标准] BS EN 61672-1-2003 Electroacoustics. Sound level meters Specifications