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IntroductionDigitalstronggroundacelerationobservationinstrument,suchasPDR1,SSA1andSSR1producedbyKinemetricsInc.,USAandSCQ?..
IntroductionDigitalstronggroundacelerationobservationinstrument, suchasPDR 1, SSA 1andSSR 1producedbyKinemetricsInc. USAandSCQ?