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2008-05-15Piezoelectric seismograph - [Earthquake Analysis]
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http://analyzers.blogbus.com/logs/20925165.html
To piezoelectric ceramic pieces for a major test of the seismograph, called piezoelectric seismic instrument, it is very sensitive and can accurately detect subtle changes in the crust, can even detect more than 10 meters, tapping the wings of insects caused by vibration of air, so pressure Xinhua seismic instrument can be accurate determination of earthquake intensity.历史上的今天:
Water quality analysis instrument 2008-05-15Hematology analyzer 2008-05-15Seismic exploration 2008-05-15Diffusing the type of earthquake 2008-05-15Financial Analysis 2008-05-15随机文章:
Water quality analysis instrument 2008-05-15Seismic exploration 2008-05-15Diffusing the type of earthquake 2008-05-15Identification of sapphire 2008-05-15Air Analyzer 2008-05-09
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