双酚a是全球范围内最广泛生产的化学物质之一，其用途包括，食品包装和聚碳酸酯树脂婴儿奶瓶。
BPA is one of the most widely produced chemicals worldwide, among its USES, resins for food packaging and polycarbonate baby bottles.
这些化合物的最大用途在于双键与其它化学物质的反应。
They react by adding other chemical agents at the double bond to form derivatives or polymers.
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