在1980年，飞利浦成为荧光灯销量第一的公司，与通用的螺旋灯管不同，他们设计了一系列弯曲型灯管。

In 1980, Philips became the first company to market a CFL, with a design based on a series of bends rather than GE's spiral.

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通用电气生产了和白炽灯同等数目的节能灯，不过后者只消耗前者20%的电量。

The GE CFL produced as much light as an incandescent, while drawing just 20 percent as much electricity.

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因此，在接通用电器具电源的同时也使指示灯(4)通电发光。

So an indicator light (4) is caused to energize and emit light when the power source of the electric appliance is switched on.

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