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open-circuit characteristic
gen.	空转特性
el.mach.	开路特性曲线 (curve); 空载特性曲线
geophys.	开路特性
open circuit characteristic
el.	空载特性曲线
mech.eng.	空载〔开路〕特性
tech.	空载线路特性曲线; 开路特性 (曲线)
wind.	开路特性