The images of spores under microscope were captured by area-scan CCD camera,and the gray level images were then transferred into binary images by adjusting threshold.
Key words: comparators; adjustable threshold voltage; synchronous rectification; reverse currents.
Hence, this scheme is powerful and possesses the adjustable threshold value to obtain the balance relationships between the imperceptibility and robustness.
The cabin has a flat stone for a threshold.
The water pressure may need adjusting.
The treaty will be the threshold of lasting peace.
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