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Q. |
In ultrasonic welding the frequency range is generally |
A. | 80,000 - 800,000 cps |
B. | 100 - 4000 cps |
C. | 20,000 - 80,000 cps |
D. | 800,000 - 5000,000 cps |
E. | 4000 - 20,000 cps |
Answer» E. 4000 - 20,000 cps |
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