Up to now the fabrication technology of light emitting diodes(LEDs)has made great progress and the products have found wide applications in numerous departments of national economics.
随着制作工艺日趋成熟，发光二极管已广泛应用于国民经济各部门。
Up to now the fabrication technology of light emitting diodes(LEDs)has made great progress and the products have found wide applications in numerous departments of national economics.
随着制作工艺日趋成熟，发光二极管已广泛应用于国民经济各部门。
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