computation of requirement造句

In that volume, Holley explored procurement in a broad sense : " the computation of requirements, the evolution of internal organization, the relationship and accommodation of conflicts between executive and legislative agencies, the character and capabilities of the aircraft industry, and many other similar facets . . . " necessary together for a proper understanding the more basic elements of procurement, involving contracts, plant construction, and so on.
It's difficult to find computation of requirement in a sentence. 用computation of requirement造句挺难的