The regenerative indirect evaporative cooling with the positive feedback principle, can further decrease the temperature of the prime air stream and expand the useful range of available energy.

回热式间接蒸发冷却具有正反馈式工作原理，能进一步降低一次空气温度，扩大有用能的利用范围。

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These components can do a range of small, useful, flexible operations between a consumer and a service provider.

这些组件可以完成一组消费者和服务提供者之间细小、有用、灵活的操作。

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These tools were useful for a wider range of tasks than the Oldowan ones.

这些工具可以用于比奥尔·德沃文化内容更广泛的任务之中。

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It's an example of a very common tool that's going to be really useful to us, not just for doing search, but for doing a whole range of problems. That is, in essence, the template the describes a log style algorithm.

不仅仅是做搜索,还可以解决一整类问题,本质上，这个模板就描述了,对数形的算法,我们一会再回来。

麻省理工公开课 - 计算机科学及编程导论课程节选

To have a useful range of 480km (300 miles) or so, an electric car using a fuel cell instead of a battery pack would require around 9kg (20 pounds) of hydrogen.

ECONOMIST: Tech.view

The easy-to-use SharePort Go II offers instant Wi-Fi coupled with a range of useful features designed for today's mobile lifestyles.

ENGADGET: D-Link releases the $120 SharePort Go II pocket router / hotspot with added SD card reader

The heliocentric theory answered these questions and suggested a whole range of useful hypotheses about the rest of the universe.

FORBES: Why The Paradigm Shift In Management Is So Difficult