海军研究办公室是一个非常有声望的奖学。
The Office of Naval Research is a very prestigious fellowship.
方法：以整群抽样方式选取海军某驱逐舰支队官兵790人，对全年军事训练伤进行前瞻性流行病学调查。
Methods: 790 crew men receiving special training from the naval destroyers were selected by cluster sampling and investigated with prospective study.
在海军服务时，也就是十多年前就已经开始学练气功了。
Over ten years ago when serving in the navy, mr. yan had started practicing qigong .
阿姆斯特朗研究工程学，后来在1949年参加了海军。
Armstrong studied engineering and later joined the navy in 1949.
目的了解海军特勤人员龋病流行病学情况。
Objective To investigate the prevalence of dental carries in persons of a navy special operation force.
目的了解海军特勤人员龋病流行病学情况。
Objective To investigate the prevalence of dental carries in persons of a navy special operation force.
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