The methods necessary for the above problems invariably require computational techniques implemented on powerful computers.

And because that plan invariably requires many things, you should concentrate initially on areas where you can achieve the biggest gains with the least effort.

Kennels invariably require sight of a vaccination certificate signed by your veterinarian.

Budget-cutting invariably requires bitter medicine, and few politicians are willing to risk re-election to administer it.

Commercial-scale piracy is illegal, and its clandestine production and supply chains invariably require organization.

The one wine that invariably requires decanting is vintage port.

Adaptive modulation systems invariably require some channel state information at the transmitter.

Such undefined terms were high stakes, invariably requiring more than usual payment.

Exporting invariably requires a great deal of documentation and specialised pricing, a large part of which is now being handled by the new computer system.

Another important difference between this form of mass-production and unit mass-production is that the former invariably requires a lower labour force than the latter.