Like your name, the english was crystal-clear...
Anyways, from the looks of it, the actual results of the upgrade seem to be hardcoded. However, I haven't messed with that yet (due to lack of interest on that subject), but you can find why it gets the upgrade in the factionunit.ini.
There are several behaviors for the units that gets such upgrades. When you see them, you'll notice that upon purchase of the upgrade, it calls for the bonus.
The bonus itself is defined as a player_upgrade I think...However, it is hardcoded, which means you can't change the effects (so you won't be able to change it to say, 200% bonus), but you cna use it for other units...A little comparing between the units that have the upgrades should help you a great deal if you want to give other units the upgrade as well...