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Laser microphone

Author:1 st High SchooI Leszno

http://www.prosoundweb.com/article/sennheiser_introduces_optical_microphone_for_industrial_medical_application/

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apec
Double Rodin Coil Style Torus
Tetrahedron String Art
Using Experimental Probability to Estimate π - Monte Carlo Method
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Right and Oblique Pyramids
กราฟเส้นตรง
pg.43 #1

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Dilation
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