The switch works by passing a pulse of current between the tip and the surface.

电源开关的工作原理是让电流脉冲穿过触点和触面之间。

《柯林斯英汉双解大词典》

In other words, they flipped a switch, which allowed them to change the electrical conductivity of the silicon without making or breaking a single chemical bond within the surface.

或者说，他们扳动了一个开关，改变了硅的电导率，而不需破坏表面上的任何化学键。

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The Stochastic mathematic model of maneuvering reentry warhead was proposed, and the rational slide switch surface was chosen based on the desire of attacking ground target.

建立了机动再入弹头随机数学模型，根据攻击目标的要求选择合理的滑模变结构开关面。

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Initially, the idea was to use plastic flexible displays (as evidenced by previous XO 3.0 renders), but degradation caused by the sun's UV rays and plastic's easily scratched surface forced the company to switch gears and use glass instead.

ENGADGET: OLPC's XO 3.0 tablet hands-on (video) Hands-on

It gives us basic capabilities for operating the rover on the surface, but we have planned all along to switch over after landing to a version of flight software that is really optimized for surface operations.

ENGADGET: NASA's Curiosity rover receives long-distance OTA update, 'brain transplant' on Mars

Make iCloud work seamlessly and easily so we store all of our important stuff (media, photos, videos) in iCloud and make switching costs very high. (iCloud now has 250M users.) Keep adding features to iMessage and promote iWorks to work with Microsoft Office so no one has a reason to switch to a Microsoft Surface.

FORBES: Three Things Apple Must Do to Regain Its Momentum