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GDZK-IV Gwajin Digiri na Vacuum don Matsayin Matsala
GDZK-IV an ƙera shi ne don auna ma'aunin injin injin bututun iska.Yana amfani da hanyar auna fitarwa na lantarki, don tabbatar da sakamakon gwajin daidai kuma amintacce.Bayanan gwaji na iya ƙididdige tsawon rayuwa da lafiyar injin injin.