or tubes have problems
或者管子有问题
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Maybe some manufacturers still don't understand why his lamp is not bright, still kicking ballasts have problems, or tubes have problems.
可能有些厂家还不明白为什么自己的灯管装上后不亮，还在怪镇流器有问题，或者是灯管有问题。
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