... 超声波探伤;ultrasonic testing;UT 超声波除尘;ultrasonic dust-removal 超声波检测;super sonic testing ...
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Olympus has managed to carve out a niche in the competitive DSLR market by including features that you won't find on cameras from Canon or Nikon, such as its ultrasonic dust-removal system.
ENGADGET: Olympus E-330: first DSLR with live LCD
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