| http://www.w3.org/ns/prov#value | - The majority of DDT existed as p, p???-DDT in the spring and summer, especially in the summer, when 93.1% of the DDTs was p, p???-DDT, and the concentration of p, p???-DDT decreased sharply in the autumn and winter. p, p???-DDD was greater than o, p???-DDD in the spring and summer, and it was lower in the autumn and winter. 3.3.
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