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A thick-film humidity sensor has been fabricated by depositing a humidity sensitive layer between two metal electrodes on Al 2 O 3 substrate. The performance of this sandwich -configured humidity sensor depends not only on the middle sensing layer itself but also on the properties of its electrode materials. The influence of electrode materials on the characteristics of a thick-film...
Traditional ultrasound image systems use analog converters to modulate the intensity of CRT according to the echo signal amplitude. Using a minicomputer and ICs the authors developed an intelligent digital scanning system for use in phased-array ultrasonic equipment. The digital scanning system has a 256*256-pixel grid image with 16 gray levels. Four different models can be displayed on a TV monitor...
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