The first Cube Sat was created in the early 2000s, as a way of enabling Stanford graduate students to design, build, test and operate a spacecraft with similar capabilities to the USSR's Sputnik.

第一个立方卫星是在2000年代初创建的，目的是使斯坦福大学的研究生能够设计、建造、测试和操作具有与苏联人造卫星类似功能的航天器。

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The external cavity quantum cascade laser with this design may operate very stable due to its low dependences on voltage and temperature, he says.

“应用这种设计的外腔式量子级联激光器能够非常稳定地运行，这得益于对电压和温度的弱依赖关系，”他说。

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"The external cavity quantum cascade laser with this design may operate very stable due to its low dependences on voltage and temperature," he says.

“应用这种设计的外腔式量子级联激光器能够非常稳定地运行，这得益于对电压和温度的弱依赖关系，”他说。

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As we learned about how humans operate we could start to design machines that would help humans when they weren't functioning properly.

当我们了解了机体如何运作,就可以设计出器械,在人体某些部位功能失常时提供帮助

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But though 89% of the country's hydro projects operate below design capacity, the building continues wastefully apace.

ECONOMIST: Small projects often give better returns

Terrorists with basic and readily available knowledge of how nuclear plants operate can design their attack to maximize the chance of achieving a core melt and large radiological release.

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But the design that is best to win that prize is not necessarily the best design to operate as a commercial vehicle for space tourism, where having low recurring costs is more vital.

ECONOMIST: SpaceShipOne