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ActiveCN104934271BAvoid liftingEasy to installSwitch operated by current/voltage unbalanceProtective switch terminals/connectionsOperabilityEngineering
ActiveCN103870456BSolve problems such as excessive query time overheadImprove query performanceSpecial data processing applicationsOriginal dataTheoretical computer science
ActiveCN109617425BRealizing three-phase-single-phase conversion can solve the problem of not losing speedCan't solve the speed dropConversion without intermediate conversion to dcTransformerElectric power system
Owner:CHINA CREC RAILWAY ELECTRIFICATION BUREAU GRP
InactiveCN101862641BSolve the problem of water pollutionWide variety of sourcesOther chemical processesFiltration separationSocial benefitsEconomic benefits
InactiveCN101778086BHas pseudorandom propertiesPseudorandom Characteristic of Periodic Embedded Training Sequence in Time DomainTelevision systemsMulti-frequency code systemsCarrier signalCoded element
InactiveCN106232287BInhibition of high temperature cracks in the first layerInhibit high temperature cracksArc welding apparatusWelding/cutting media/materialsUltimate tensile strengthMetal powder
ActiveCN103853536BImplement trackingRealize full trackingSpecific program execution arrangementsSpecial data processing applicationsDatabaseTransition diagram