The way the drivetrain values are to be calculated is described in the text not as well as it could be. A better wording of the text could be:
Each {type} DTU produces {N} units of thrust (TH), requires 1 EP per round, takes up {N}vl per unit installed and costs Cr{N}
Each {type} DTU produces {N} units of thrust (TH), requires 1 EP per round, takes up {N}vl per unit installed and costs Cr{N}