"Electroacoustics " CNS Standards List| Methods test | Methods determination | Copper beryllium | Method Determination | Information technology | Intelligent lighting | Seamless Nickel | Ships | |
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CNS 7129
2015 Edition Electroacoustics – Sound level meters – Part 1: Specifications 電聲學-聲音位準計-第1部:規格 |
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CNS 7129
2015 Edition Electroacoustics – Sound level meters – Part 1: Specifications 電聲學-聲音位準計-第1 部:規格 |
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