4x4 led light bar是什么意思

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4x4 led light bar4X4 LED灯条例句:1.For example, panasonic's new everleds led light is likely to retail for around$ 40 per bulb, or twice as much as the expected cost of the new esl bulbs. 比如，松下的新everleds led灯每只零售约40美元，是新esl灯预计价格的2倍。