Products that consist of a circuit board with no case or chassis (e. g. , data acquisition board for installation into a computer) should never require cleaning if handled according to instructions.
对于由无外壳或机箱的电路板组成的产品（例如被安装到计算机的数据采集板），如果按照说明操作，则无需清洁。
Products that consist of a circuit board with no case or chassis (e. g. , data acquisition board for installation into a computer) should never require cleaning if handled according to instructions.
对于由无外壳或机箱的电路板组成的产品（例如被安装到计算机的数据采集板），如果按照说明操作，则无需清洁。
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