erro - fail
- extensible
- extensible centers
- extensible language
- extension
- extension arm
- extension bar
- extension bed lathe
- extension chuck
- extension cord
- extension coupling
- extension head
- extension holder
- extension ladder
- extension length
- extension line
- extension machine
- extension of robot
- extension of spindle
- extension part
- extension piece
- extension program
- extension rod
- extension shaft
- extension socket for tools
- extension spring
- extension toolholder
- extensive manufacturing
- extent
- extent of engagement
- extent of test
- external
- external action
- external angle
- external angular plunge grinding machine
- external beam control
- external bearing
- external bearings
- external box system
- external brake
- external broach
