One of the innovations in the Soviet locomotive factories became the principle of whole body supporting structure which had previously been used only by the Czechoslovakian CHS1 electric locomotives and the Riga ER1 electric train.
One of the innovations in the Soviet locomotive factories became the principle of whole body. This whole body was supporting structure. This whole body supporting structure had previously been used only by the Czechoslovakian CHS1 electric locomotives. This whole body supporting structure had previously been used only by the Riga ER1 electric train.