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однополюсной переключатель на два направления stresses
energ.ind.	single-pole double-throw switch
однополюсный переключатель на два направления
commun.	single pole double throw switch (The term SPDT stands for Single Pole Double Throw Switch which is used to control two dissimilar circuits through a similar single input.)
O&G, sakh.	single-pole double-throw (SPDT)
tech.	single-pole double-throw switch