... long sand bag 长沙袋 sand bag well 袋装砂井 Pe Sand Bag 沙袋集装袋 ...
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the improved sand bag well 加强型袋装砂井
bag sand-well 袋装砂井
bag sand well 袋装砂井
bag sand-well method 袋装砂井法
reinforced bag sand well 加强型袋装砂井
super long bag sand well 超长袋装砂井
·2,447,543篇论文数据，部分数据来源于NoteExpress
Sand well the bag is a kind of anti - to pull the strength higher, water the well ventilated is good, and the acid-proof alkali decay with the material that the microorganism erode.
沙井袋是一种抗拉强度较高，透水透气性好，耐酸碱腐蚀和微生物侵蚀的材料。
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