When the patients with senile or secondary osteoporosis are treated with screw fixation, the screws are likely to get loose or pulled out.
老年性或继发性骨质疏松患者骨折采用螺钉固定，容易松动、拔出。
The plug type surge absorber is easy to be inserted in or pulled out from normal power sockets such as extension sockets and domestic sockets, etc. , thus being very convenient.
本实用新型容易拔插于一般电源插座，例如延长线插座、家用插座等，使用极为方便。
The plug type surge absorber is easy to be inserted in or pulled out from normal power sockets such as extension sockets and domestic sockets, etc. , thus being very convenient.
本实用新型容易拔插于一般电源插座，例如延长线插座、家用插座等，使用极为方便。
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