DBK group is a world-wide operating company in product innovation and man-ufacturing in the field of air treatment, insecticide and air freshener.
DBK集团是一家跨国公司，主要从事空气处理
，
剂，空清新剂等产品的生产和革新。
贝（decibels referred to one-kilowatt）DBK group is a world-wide operating company in product innovation and man-ufacturing in the field of air treatment, insecticide and air freshener.
DBK集团是一家跨国公司，主要从事空气处理，剂，空清新剂等产品的生产和革新。
The weathering profiles of WC3 and DBK are of clastic rocks, grain size frequency distribution curves of quartz show single, broad peak, and their modes are approximately 5.1φ and 6φ respectively.
两条碎屑岩风化剖面（WC3和DBK）的
率布曲线呈单峰宽峰态，众数值别约为5.1φ和6φ。
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