📝 提交该分类网址

📁 声学，

Acoustics is the interdisciplinary science that deals with the study of sound, ultrasound and infrasound, all mechanical waves in gases, liquids and solids respectively.

子分类

📁 主动噪声控制

📁 Historical声学

📁 超声

条目 (8+)

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TWA DCS Alumni Association

http://twdcs.org/

👍 0 详情链接

Piedmont Airlines

http://www.jetpiedmont.com/

👍 0 详情链接

AirTimes

http://www.airtimes.com/

👍 0 详情链接

Mackey Airlines

http://www.mackeyairlines.com/

👍 0 详情链接

Petester's Eastern

http://www.petester.com/peal.html

👍 0 详情链接

AirTimes: Eastern Airlines

http://www.airtimes.com/cgat/usb/eastern.htm

👍 0 详情链接

Bessie Coleman

http://www.bessiecoleman.com/

👍 0 详情链接

Bridge of Wings

http://bridgeofwings.com/

👍 0 详情链接