direct current system meaning in Chinese

直恋统
直流电系统
直流制

Protection against corrosion by stray current from direct current systems
直流系统中杂散电流引起腐蚀的防护
Protection against corrosion by stray current from direct current systems
直流系统中杂散电流引起腐蚀的防护
Protection against corrosion by stray current from direct current systems ; german version en 50162 : 2004
直流系统中杂散电流引起腐蚀的防护
When the cables use in alternating current system , rated voltage of cables should be at least equal the rated voltage of the system ; when the cables use in direct current system , rated voltage should be not greater than 1 . 5 times of the rated voltage of the cables
当电缆使用于交流系统时，电缆的额定电压至少应等于该系统的额定电压；当电缆使用地直流系统时，该系统的额定电压应不大于电缆额定电压的1 . 5倍。