袋装砂井
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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
sand bag well 袋装砂井
the improved sand bag well 加强型袋装砂井
bag sand well
袋式砂井
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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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