предложение - при этом

[хони]

помогите перевести!

Линия была модернизирована в 2006 г. , при этом было установлено часть нового оборудования , а часть оборудования осталась от старой линии.

the line was upgraded in 2006, some part of new equipment was installed , the rest of equipment left from the old line

[Craftman_q]

..with the old equippment supplemented by new units

[Василиса]

when

[foxtrot]

Вариант:
When the line was upgraded in 2006 some new equipment was installed leaving intact a portion of the existing/old line.

[ya]

and тоже возможно