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一步迅速开始
2012-10-24 23:21| 发布者: helloshigy| 查看: 7007| 评论: 0
根据API°对原油进行分类:API°>34 为轻质原油API°=34~20 为中质原油API°=20~10 为重质原油API°<10 为特重原油
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