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I

см. тж. сфокусирован на

The laser beam was focus(s)ed (up)on the workpiece.

Pulsed laser radiation is focus(s)ed on(to) a small fuel pellet of solid deuterium-tritium.

II

The eye cannot focus on an object much closer to it than ...

Источник: Русско-английский научно-технический словарь на Gufo.me