The index system of regional water conservation is set up to reveal relationships between elements in this system and subsystem.

建立了区域节水指标体系，以反映各子系统内各要素以及子系统间的相互关系。

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At system and subsystem hierarchy, the characteristic, structure and typical configurations of EAF steel plant are presented, and the structure in series and the production on scale are emphasized.

在系统与子系统的层次上对电炉钢厂自身的特点、结构和典型流程予以说明，着重指出结构纵向化和生产规模化的趋向。

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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。

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The new HP rp5800 Retail System, Digital Signage Edition drives two discrete channels of content with a powerful graphics subsystem and comes with retail-hardened features including the ability to operate in a 40 degree C (105 degree F) environment.

ENGADGET: HP goes display crazy, unveils eight new models, four IPS panels (hands-on)