It is on track to be introduced in summer of 2012, and is still in the engineering phase, not early production. We suspect that poor battery life doomed the prior prototype version.

iPhone5将于2012年夏天发布，目前仍处于工程设计阶段，新机尚未产出，放弃此前原型机设计可能是因为电池续航时间不甚理想。

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In the software engineering, both spiral model and prototype method emphasize evolvement.

在软件工程中，螺旋模型和原型法都是重视软件进化的。

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At last, an information management platform of virtual prototype engineering for complex product is designed, implemented and applied.

这些理念将指导整个复杂产品虚拟样机工程信息管理系统的设计、开发和应用实施。

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The Robotics and Mechanisms Laboratory (AKA the RoMeLa Project) at the College of Engineering at Virginia Tech has designed and built a prototype robotic hand that is controlled and operated by compressed air.

ENGADGET: Robotic hand controlled by compressed air grasps the concept of delicacy