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1 Results for "《〈 문의 OIO↗5793↗7458 》〉 셔츠룸후기ð νeveningм셔츠룸후기선릉셔츠룸Ξthreshold 강남셔츠룸셔츠룸추천 셔츠룸후기シ셔츠룸후기㎩regular≡"
Standing waves of sound
Project
by
Andrew Ferguson
An ultrasonic interferometer is assembled from optical drive components, 3d-printed parts and an ultrasonic range-finder.
748
36