以硼酸锌玻璃体为基础的高压二极管的电镀层的铅的替代品仍然不切实际。

No practicable substitutes for lead in the plating layer of high voltage diodes on the basis of a zinc borate glass body are available.

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下一步要从等离子体显示屏，液晶显示屏（LCD）和最新的发光二极管显示屏（LED）中做出选择。

The next choice that must be made is between plasma display, liquid-crystal display (LCD) or the latest light-emitting diode (LED) variety.

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应用时空分割原理，通过光、机、电一体化技术即可减少发光二极管的使用数量，以降低成本。

By applying the principle of time-space, light-machine-electricity integration can reduce the use of LED to cut down the cost.

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