1·Low voltage AC system operating voltages from 120 to 600 VAC.
低压交流电系统中从120到600 VAC的电压称为低压。
2·Energy conservation of AC system is commonly concerned by people.
空调系统的节能是人们普遍关心的问题。
3·Medium voltage AC system operating voltages from 601 to 15000 VAC.
中压交流电系统中从601到15000 VAC的电压称为中压。
4·One, it acts as a filter, filtering out particles as they travel around the AC system.
它主要有三个功能：首先，它像是一个过滤器，颗粒在穿过AC系统时会被过滤出来。
5·Results show that the novel system can better the commutation and probably be used to the weak AC system.
新型直流输电系统改善了换相特性，还可能应用到弱交流系统中。
6·The faults of HVDC power transmission system make the electrical characteristics of AC system more complex.
故障的直流输电系统中的电气特性的交流系统更复杂。
7·The influences of load models on transient stability of a multi-infeed DC and AC system are analyzed at length.
分析负荷模型对多馈入交直流系统功角稳定性的影响。
8·The DC system is normally supplied from a battery charger system, which is supplied from the low voltage AC system.
直流系统通常由蓄电池充电系统供电，蓄电池充电系统由低压交流系统供电。
9·The paper summarizes the effect of AC system on underground pipelines. Some measures on how to avoid its interference are put forward.
综述交流电力线路对埋地管道交流干扰的危害，提出防止危害的几条措施。
10·The high voltage direct current (HVDC) system connected with weak AC system is considered to be one of the causes for voltage instability.
与弱交流系统相连的高压直流系统被认为是引起电压不稳定的一个因素，评价交直流系统电压稳定性的方法相当复杂。