the immune system
無線セキュリティーシステム
{Analyzing System for Precursors of Earthquakes}
ハイファイシステム
a system for communicating
a transportation system that operates over relatively short distances
a device for collecting military information, called {surveillance tower array sensor system}
the sensory system for hearing
a home security system that protects against intruders and fire
a meteorological information system developed by the Japanese Weather Association called the mesh meteorological information system
the sensory system for vision