SPST
Initialism of single pole, single throw: a type of electrical switch.
(nuclear industry) loss of fluid test
Involving accomplishments or activities that have not been done before, or developing or using new methods or techniques.
(ornithology) Any bird in the family Certhiidae, the creepers.
回路への電力を回復させるために、制御パネルの故障した単極単投スイッチを交換しました。
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