- phase sequence lamp
- 相: looks; appearance
- 序: order; sequence
- 指示燈: pilot lamp; pilot light; gui ...
- 相序指示器: electrogeniometer; phase order indicator; phase sequence indicator; phase-order indicator; phase-sequence indicator
- 指示燈: pilot lamp; pilot light; guiding lights; indicator lamp; indicator light; indicating lamp◇指示燈插座 pilot bracket
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