below or equal meaning in English

小于或等于

Electromagnetic compatibility - part 3 - 11 : limits - limitation of voltage changes , voltage fluctuations and flicker in public low - voltage supply systems - equipment with rated current below or equal to 75 a and subject to conditional connection
电磁兼容性.第3 - 11部分:限值.公共低压供电系统的电压变化电压波动和电压闪动的限值.额定电压低于或等于75 a的设备和按条件要求的连接