Study Design. Biomechanical roles of anterior and posterior portions of the disc (AD and PD, respectively) in governing posterior facets (PF) behavior of a C5-C6 motion segment.

研究设计：研究椎间盘前、后部分（分别为AD和PD）在调节C5-C6运动节段后方小关节面（PF）活动的生物力学作用。

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They take the 1500 AD and 15-16th century respectively as the basic historical points of phases division.

他们分别将1500年和15、16世纪作为世界历史的基本分期年代。

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Dementing illnesses comprise Alzheimer's disease (AD), Pick's disease, Multi infarct dementia (MID) and other neurological disorders. These diseases have different clinical characters respectively.

痴呆类疾病可分为阿尔茨海默病(AD)、皮克病、多发性梗死性痴呆(MID)等类型，它们各具不同的临床特点。

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Back home, they were an English teacher and ad executive respectively, but a passion for fine food led them to jack it all in and head to France.

BBC: Vive l����volution in Paris

Ford and Toyota similarly increased their ad expenditures by 15% and 22%, respectively, while the 82% uptick at UAW Health Care Trust was a significant contributor to latter.

FORBES: Madison Avenue Rebound: U.S. Ad Spending Up 3.8%

According to TNS Media Intelligence, which tracks ad spending, total ad revenue for the two award shows fell 16% and 17%, respectively, from last year to this year.

FORBES: Magazine Article