trip - two-
- trip
- trip arm
- trip back
- trip button
- trip circuit
- trip ciruit
- trip cock
- trip device
- trip gear
- trip knob
- trip lever
- trip push-button
- trip pushbutton
- trip relay
- trip setting
- trip supply
- trip train stop
- trip train stop device
- trip valve
- trip working of trains
- trip-out
- tripartite
- tripier
- triple car set
- triple circuit jack
- triple cylinder compressor
- triple expansion
- triple lever
- triple ratio change wheel gear
- triple seat
- triple valve
- triple-grid
- triple-grid amplifier
- triple-point jack
- triple-pole double throw
- triple-pole single throw
- triple-pole single-throw switch
- triple-pole switch
- triple-reduction gear
- triple-winding relay
