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Ultrasound

Revision as of 19:38, 20 October 2018 by NRJC (talk | contribs) (Created page with "==Key Stage 3== ===Meaning=== Ultrasound is sound that has a frequency higher than 20,000Hz. ===About Ultrasound===")

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Key Stage 3

Meaning

Ultrasound is sound that has a frequency higher than 20,000Hz.

About Ultrasound

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