Objective To investigate the effect of head down bed rest(HDBR) or electrolytic silver ion on intestinal bifidobacteria in men and mice.
目的观察头低位卧床以及电解银离子（航天饮用水消毒剂之一）对肠道双歧杆菌的影响。
Electrolytic recovery and ion exchange are used to recover silver from photo-processing wastewater.
采用电解法和离子交换法回收洗相废水中的银。
Electrolytic recovery and ion exchange are used to recover silver from photo-processing wastewater.
采用电解法和离子交换法回收洗相废水中的银。
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