The primary constraints on contemporary western science are:

The secondary constraints arise from the condition that the primary constraints should be preserved in time.

He also introduced primary and secondary constraints into mechanics.

- the primary constraint is that a single position of the object must account for all of the feasible matches.

Constraints derived in this way or imposed from the beginning of the problem are called primary constraints.

An equation that is identically true, possibly after using one of our primary constraints.

The primary constraint on additional handle length is the lack of space in which to swing the hammer.

The primary constraints are scope, time, quality and budget.

One of the primary constraints is that there is only one commercial food production facility in the state open to independent agricultural enterprises.

LCDs can, in theory, be built at any size, with production yields being the primary constraint.