individual contactor controlled traction equipment

• 英?[??ndi?vidju?l ?k?nt?kt? k?n?tr?uld ?tr?k??n i?kwipm?nt]
• 美?[??nd??v?d?u?l ?kɑn?t?kt? k?n?trold ?tr?k??n ??kw?pm?nt]