Instead of mercury lamp and sodium lamp.

能代替汞灯、钠灯使用。

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Power factor of sodium lamp and mercury lamp can be improved 90%.

当选用汞灯、钠灯光源时，可按用户要求将功率因数提高到90%。

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A new kind of dispenser electrodes for high pressure sodium lamp has been developed.

其次介绍了一种新型的高压钠灯用储备式电极。

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A new kind of dispenser electrodes for high pressure sodium lamp has been developed.

其次介绍了一种新型的高压钠灯用储备式电极。

youdao