目的：探讨利塞膦酸钠治疗绝经后骨质疏松症的临床疗效，并评价其安全性。
Objective:To evaluate the effect and safety of oral administration of residronate sodium in treatment of postmenopausal women with osteoporosis.
由于坝体疏松，缺少可控制的泄洪通道，堰塞坝极易溃坝并引发下游洪灾，造成大量人员伤亡。
Because of their rather loose nature and absence of controlled spillway, landslide DAMS frequently fail catastrophically and lead to downstream flooding, often with high casualties.
天然胶塞由于组分复杂、结构疏松，易对药物稳定性产生不良影响。
Natural elastomeric closures had a bad impact on drug stability because of the complicated components and the loose structure.
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