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moolea 发表于 2017-8-11 17:16:17

ASTM E336-16 Measurement of Airborne Sound Attenuation between Rooms in Building

ASTM E336-16 Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings

admin 发表于 2017-8-13 15:18:12

谢谢您的分享,金币已奖励!

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