• 按形成节理的力的性质可以分为： • 原生节理（Primary Joint）：在岩石形成过程中产生的节理。 • 次生节理（Secondary Joint）：岩石形成后才形成的节理。
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Primary Joint Account Holder 基本联名帐户持有人
Hexi Township joint primary school 河西乡联合小学
Primary cartilaginous joint 骨端软骨
primary y joint 原生节理
Primary jaw joint 原始颌关节
primary flat joint 原生平伏节理
primary truss joint 主桁节点
Other primary arthrosis of first carpometacarpal joint 第一腕掌关节其他的原发性关节病
The center, which would be based at the Aberdeen Proving Grounds in Maryland, would also be a primary support for all other military services and joint operations.
这一中心，地点位于马里兰的阿伯丁试验场，同时也为其他军种和联合作战提供主要的保障。
A survey has shown that two-thirds of workers in primary school and early years have received treatment for back and joint problems as a result of working in child-sized environments.
一项调查显示，有三分之二的小学教职工表示他们曾因在儿童专用的环境中工作，而患上背部及关节的疾病，并因此接受了治疗。
Wolverhampton also provides primary flight controls for the European fighter, Typhoon, and a main engine lift system for the Rolls-Royce engine on the STOVL version of the U. S. Joint Strike fighter.
伍尔弗汉普顿工厂也为欧洲台风战斗机提供主飞行系统，也为美国STOVL版联合攻击战斗机劳斯莱斯的引擎提供主发动机提升系统。
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