泰利斯公司发言人称，此次购买协议将为泰利斯公司提供关键技术基础，从而在海上安全和保卫方面提供系统之系统能力。

The purchase is designed to provide Thales with key technology bricks needed to offer a system of systems capability in maritime safety and security, a Thales spokesman said.

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特别需要指出的是，UML 2.x 努力巩固系统之系统的概念，其中任意的系统都可以由一系列的子系统组成，而子系统又可进一步分解为它自己拥有的子系统。

Specifically, UML 2.x seeks to underpin the notion of systems-of-systems, where any system can be composed of subsystems which can by further decomposed into subsystems of their own.

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但是生物识别系统是一个唯一值得供应商为之支付额外费用的身份鉴别系统。

But a biometric identification system could be a unique identifier that might justify its additional expense for some vendors.

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Delta v is positive in this direction here, the work is negative. So work on the system is positive. Work done by the system is negative.

功是负的，总而言之,外界对系统做功的符号为正。

麻省理工公开课 - 热力学与动力学课程节选

You could imagine that you've got virus that's propagating inside your cells, making more and more virus, your immune system really responds well to that.

你可以想象,病毒在你的体细胞内繁殖,数量越来越多,你的免疫系统对此反应非常之强烈

耶鲁公开课 - 生物医学工程探索课程节选

These two systems which are shown in the core of this diagram really are responsible for regulating and exchanging information between the other organ systems.

在这张图的中心画的就是这两个系统,它们的功能是调节其他系统,并与之交换信息

耶鲁公开课 - 生物医学工程探索课程节选