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Lighting a surface can be a costly operation.
光照一个表面可以是一个昂贵的操作。
youdao
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Fan operation switch, lighting switch, temperature controller, emergency stop.
风机、照明开关，温控仪，急停开关。
youdao
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Fan operation switch, lighting switch, temperature controller, emergency stop.
风机、照明开关，温控仪，急停开关。
youdao