Observers from Earth can see two types of eclipses â eclipses of the Sun (solar eclipses), and eclipses of the Moon (lunar eclipses). These occur when the Sun, Earth and Moon align in a straight or almost straight configuration.
TRR may refer to: 1  China Bay Airport near Trincomalee, Sri Lanka. 2  Tamper-resistant receptacle, child-safe power receptacle required in new and renovated dwellings since the U.S. 2008 National Electrical Code.3  Target row refresh, a hardware feature of DDR4 used to prevent the row hammer effect from occurring. Tamper-resistant receptacle, child-safe power receptacle required in new and renovated dwellings since the U.S. 2008 National Electrical Code. 2  Target row refresh, a hardware feature of DDR4 used to prevent the row hammer effect from occurring.
RTR may refer to: 1  Remember The Ronin, The registered trademark (RTR) of the American paintball company Remember The Ronin.. 2  Roll Tide Roll, the chant of the University of Alabama's Crimson Tide. Remember The Ronin, The registered trademark (RTR) of the American paintball company Remember The Ronin.. 2  Roll Tide Roll, the chant of the University of Alabama's Crimson Tide. 3  Advanced and retracted tongue root (ATR and RTR), contrasting states of the root of the tongue during the pronunciation of vowels.