对3种不同聚合材料的塑料袋生物降解特性借助BOD数字呼吸仪进行了降解试验。
The biodegradation experiment has been conducted with the aid of BOD digital respirator on plastic bag made by 3 different kinds of polymaterial.
警察要我吹一下塑料袋(以测定我呼吸中的酒精含量)。
The policeman asked me to blow into a plastic bag, ie in order to breathalyse me.
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