非辐射场 meaning in English

non radiation field

Electrical installations in ships - part 353 : single and multicore non - radial field power cables with extruded solid insulation for rated voltages 1 kv and 3kv
船舶用电气装置.第353部分:额定电压为1kv和3 kv的挤制固体绝缘单芯和多芯非辐射场电力电缆
Electrical installations in ships - part 353 : single and multicore non - radial field power cables with extruded solid insulation for rated voltages 1 kv and 3 kv ; amendment 1
船用电气装置.第353部分:额定电压为1kv和3kv挤压固体绝缘的单芯和多芯非辐射场动力电缆.修改件1