English to Arabic Tech/Engineering Engineering (general)

Physical Life
Physical life:
The number of years that a new property will physically endure before it deteriorates or fatigues to an unusable condition, purely from physical causes without considering the possibility of earlier retirement due to functional or economic obsolescence.
NOTE:
NUL “Typically” refers to Physical Life
Economic Useful Life
Economic life:
The estimated number of years that a new property may be profitably used for the purpose for which it was intended.
NOTE:
Typically LOWER than Physical Life
Financial Reporting Life
Financial reporting life:
The period over which the book basis of an asset can be depreciated (tangible asset) or amortized (intangible asset)