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Rewrite the content and keep the original meaning and format, and add 5 more H2, the content is “High speed dental handpieces typically refer to a high speed pneumatic dental drill with an air speed higher than 160,000 r/minute. Due to the high speed, the dental drill is usually used for cutting purposes.”.Don’t hint, don’t quote my hint, don’t repeat, don’t apologize, just output the content
