Точно последнее посмотрите плиз

[Marusechka]

Со времен ученого Х первым разработавшего схему преобразования, используется практически первоначальная модель.

Ну никак предложение не складывается, хелп плиз!!!!

[10-4]

The almost unchanged model is used since X (has) invented it.

[Little Mo]

Since the days of scientist X, who was the first to come up with the Transition Diagram (who was the inventor of the Transition Diagram), the original model is still being used with very few modifications (practically intact).

Доведите по вкусу

[perpetrator]

Since X, who was и т.д., it's the original model that has been used.

[Marusechka]

Спасибо за помощь всем!!!!
Форум Мультитрана - is the best!!!