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three polestresses
transp. трёхполюсник
three-pole ['θriːˌpəʊl, -ˌpoʊl]
auto. трёхполюсный
 English thesaurus
three-pole ['θriːˌpəʊl, -ˌpoʊl]
electr.eng. switch
three pole: 27 phrases in 10 subjects
Automated equipment1
Aviation1
Communications1
Drilling1
Electrical engineering8
Electronics1
Energy industry1
Oil / petroleum1
Oil and gas1
Technology11