The purpose of the present study was to determine the risk factors for infection following primary and revision knee replacement in a large register-based series.
本研究的目的是，在一基于注册的大样本病例研究中，测定首次膝关节成形术或翻修术术后感染的危险因素。
At present, the study on Undaria Pinnatifida is just in primary process in China and the reports are few, while the study in Japan is extensive.
目前，国内对裙带菜的研究尚处于起步阶段，相关报道较少，国外尤其是日本对裙带菜营养和药用价值的研究比较深入。
This paper aims to study the present situation of physical education teaching in primary and middle schools under the guidance of "health is the first".
运用文献资料、问卷等方法，剖析在“健康第一”指导思想下中小学体育教学的现状，就学校体育教育专业教学改革提出看法。
This paper aims to study the present situation of physical education teaching in primary and middle schools under the guidance of "health is the first".
运用文献资料、问卷等方法，剖析在“健康第一”指导思想下中小学体育教学的现状，就学校体育教育专业教学改革提出看法。
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