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In transport the equivalent of a smart meter is a vehicle's on-board unit.
在交通运输领域，相当于一块智能电表的是汽车上的一个车载单元。
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A plurality of unit light sources are disposed on the board.
多个单元光源设置在所述板上。
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A plurality of unit light sources are disposed on the board.
多个单元光源设置在所述板上。
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