порядка

см. тж. около; приблизительно

• If A and B are square matrices of order n (or of the nth order), then the product AB is ...

• The decay is first-order (or of the first order).

• Calculations indicate that laser energies of (or on, or in) the order of 5,000 joules will be needed.

• These steels have yield strengths in the 200,000 psi area.

• At temperatures in the neighbourhood of 1000°C ...

• Usual burning times are of (the) order (of) 150 sec.

• The thermal efficiency of these units will be in the region of 40%.