ultrasonic造句
1. Ultrasonic waves travel at around 300 metres per second .
2. Ultrasonic waves are at a higher pitch than the human ear can hear.
3. A handset would contain an ultrasonic transmitter and the television fitted with a matching receiver.
4. In autumn 1978, ultrasonic pulsing at two-second intervals was recorded at dawn at the King Stone.
5. Three days after admission ultrasonic appearances in the abdomen were normal.
6. Cats, too, are sensitive to ultrasonic frequencies and can hear mice and voles in hidden places.
7. Screwdriver blades might have a retractable sheath or ultrasonic guards, for example.
8. Similarly, how does a moth perceive the ultrasonic acoustic radar signals of a bat?
9. Parisi developed the first ultrasonic toothbrush for Cavitron Ultrasonics in New York in 1967.
10. Includes basic items: Oral examination, ultrasonic scaling, and polishing.
11. GIS partial discharge; ultrasonic detection; ultra-high frequency detection.
12. Set up ultrasonic wire bonding laboratory.
13. Much as bats do, robots send out ultrasonic signals.
14. Conclusion Ultrasonic disrupter is suitable to extract Astragalus polysaccharides.
15. Piezoelectric ceramic is used widely for ultrasonic fish finder.
16. Ultrasonic examination; Fetal; Cystic hygroma; Advanced.
17. Objective : To analyze the ultrasonic feature in different dialectical type of chronic pelvic inflammatory disease.
18. Especially, it provides more and new informations than ultrasonic diagnosis diagnosis of fetal CNS.
19. Objective : To evaluate the ultrasonic imaging features and the detective method of internal mammary artery ( IMA ).
20. Methods Using high-frequency sonography, the ultrasonic characteristics of salivary glands (parotid and submaxillary) in 15 Sjgren's syndrome patients were observed and summarized.
21. A new intelligent ultrasonic power meter with large measuring range was developed.
22. In both cases the sounds are audible to humans, not ultrasonic like the more specialized bat clicks.
23. Another use is to produce pictures of an unborn baby by reflecting ultrasonic waves off its body.
24. All 605s are fitted with a three-way catalytic converter, anti-lock braking system and an ultrasonic alarm as standard.
25. Those they use for navigation are so high-pitched that they are ultrasonic, far beyond the range of any human ear.
26. Dolphins emit rapid trains of high-pitched clicks, some audible to us, some ultrasonic.
27. Some systems utilize other types of sensors, as thermal sensors, ultrasonic sensors.
28. Methods 60 cerebral infarction patients with motor dysfunction were equally randomized to two groups—cluster needling of scalp point therapy group and Cerebral ultrasonic therapy group.
29. The transmission rule of the lamb wave in the structure of the flexible joint is discussed, and the ultrasonic pulse echo is analyzed in the time-field and frequency-field.
30. Reasonable result could be obtained by using water as dispersion medium, and nonyl hydroxybenzene polyethoxylate ether as dispersant but ultrasonic treatment was not preferred.
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