Limonene needed in recycling foamed polystyrene was extracted from the ear of schizonepeta tenuifolia using ligroin.
本文研芥穗中提取回收聚乙烯所需的柠檬烯,法是溶剂萃取。
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You can also look for special recycling drop-off locations for odd items like batteries or styrofoam.
你也可以为电池或泡沫聚苯乙烯等奇怪物品寻找特殊点。
What throws a spanner in the works is the layer of polyethylene that makes the cup waterproof, and the lid, which is most often made of polystyrene.
在工作中投入扳手是使杯子防水聚乙烯层， 以及通常由聚苯乙烯制成盖子。
By contrast, early laboratory experiments used sterile spherical beads of just one type of plastic, polystyrene, which were bigger than the nano-size range.
相，早期实验室实验仅使用一种塑料——聚苯乙烯无菌球形珠子，其尺寸大于纳米尺寸范围。
For example, polystyrene turns into small pieces with time.
例如, 聚苯乙烯随着时间推移会变成小块。
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划词翻译
详细解释
芥穗中提取回收聚
乙烯所需的柠檬烯,
法是溶剂萃取。
点。
，早期
