- ultrasonic tooth cleaner
- 超声波洁牙器
Medical Chinese dictionary (湘雅医学词典). 2013.
ultrasonic tooth cleaner
Look at other dictionaries:
Ultrasound — Not to be confused with Supersonic .Ultrasound is cyclic sound pressure with a frequency greater than the upper limit of human hearing. Although this limit varies from person to person, it is approximately 20 kilohertz (20,000 hertz) in healthy,… … Wikipedia
MythBusters (2006 season) — Country of origin Australia United States No. of episodes 28 (includes 2 specials) Broadcast Original channel Discovery Channel … Wikipedia
