Many systems are designed at three primary levels: system, subsystem, and component, as shown in Figure 1.
许多系统是在三个主要层次上设计的：系统、子系统和组件，如图1 所示。
Health for all is a value system with primary health care as the strategic component.
人人享有卫生保健是一个价值体系，初级卫生保健则是战略内容。
The result shows these internal clinics have been playing an important role in primary health care and been an essential component in health services system.
结果显示，医务室在初级卫生保健中发挥了重要作用，是卫生服务体系的重要组成部分。
The primary mirror is an important component of optical system applied on a space telescope, and its thermal optics property is the guideline to thermal design and control.
主镜是空间望远镜光学系统的重要组成元件，其热光学特性将为光学系统的热控设计提供依据。
As a primary job component of Logistics information system, Admeasure Management system has been adopted successfully in the project of the Logistics information system of Hunan Post '.
配送管理模块做为邮政物流信息系统的一个关键作业模块，已经在“湖南省邮政物流信息管理与信息操作系统”中进行了应用。
Shear walls are commonly used as the primary component of the lateral load resisting system. The research on the performance of lateral load resistance is a key problem in Light-frame wood structures.
剪力墙是轻型木结构抵抗侧向荷载的重要构件，研究剪力墙的抗侧力性能是研究轻型木结构抗侧力 性能的关键问题。
Shear walls are commonly used as the primary component of the lateral load resisting system. The research on the performance of lateral load resistance is a key problem in Light-frame wood structures.
剪力墙是轻型木结构抵抗侧向荷载的重要构件，研究剪力墙的抗侧力性能是研究轻型木结构抗侧力 性能的关键问题。
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