fault indication meaning in English

故障指示灯

On air photographs, fault indications have one common property: they are always straight, or slightly curved .
在航空相片上，断层标志有一个共同的特点，就是它们始终是平直的或轻微弯曲的。
Afi - automatic fault indication
自动错误显示
Amp measuring principle with superimposed asymmetry measurement . fault indications according to the amp measuring principle are displayed via alarm2 , fault indications according to the asymmetry measurement are displayed via alarm1
安培测量原理与叠加不对称测量.据安培的故障迹象显示测量原理经警报2 ,根据对称性故障迹象显示经测量警报1