发布时间:2025-01-31 18:57:03
LM就是流明,亮度单位.1LM就是一根蜡烛点亮的亮度
LM/W 就是每瓦产生的亮度
PCB 是指线路板用的材料是玻纤板
听朋友说种植丹桂蛮有前景的想买一批丹桂种植请问哪里有批发丹桂小苗
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