Maintenance for a given body design of an organism is relatively constant.

对一个有机体特定主体设计的维持是相对恒定的。

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The design decisions provide a conceptual basis for system development, support, and maintenance. [McGovern] 7.

设计决定为系统开发，支持和维护提供概念上的基础。

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Design rationale for software design and maintenance.

软件设计和维护的设计原理。

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It is not possible to meet development and integration needs without building a strong engineering base for the design, construction and maintenance of infrastructure facilities.

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The State of California, Department of Transportation (Caltrans) is responsible for the design, construction, maintenance, and operation of the California State Highway System, as well as that portion of the Interstate Highway System within the state's boundaries.

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Globally, the nonprofit group ASTM International (formerly the American Society for Testing and Materials) sets voluntary safety standards for the industry regarding design, manufacturing, maintenance and operations.

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