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seral adj.【生態】演替系列的。

seralbumin

The seral znm73x anti - wear material valve made by superior quality anti - wear material from our company , with special condtruction design , hight anti - wear for the wear and corrosive slurry 我公司生產的znm73x系列耐磨料漿閥采用本廠優質耐磨材料,特殊結構設計,適于各類無腐蝕性料漿管道中作節流或截止使用,尤其對含磨蝕性顆粒料漿具有很高的抗磨性。