气封atomseal详细»
气封air seal;air tight seal;atmoseal;gas lock;gas seal;vapor lock;vapour lock详细»
气封confinement;gas lock详细»
气封air seal详细»
气封air seal;atmoseal;gas bound;gas seal;gasbound;vapor lock详细»
气封air seal;atmoseal详细»
气封exclusion of air详细»
气封air seal详细»