随着这些设备系统的扩展，世界将更平稳地靠近普适计算模式，这一模式由帕洛·阿尔托研究中心(Xerox PARC)的马克•威赛(Mark Weiser)所构想。
As these ecosystems expand, the world will move steadily closer to the ubiquitous-computing model envisaged by Xerox PARC's Mark Weiser.
对无衍射光束———贝塞尔高斯光束通过硬边光阑时的功率损耗作了研究，给出了普适的损耗公式。
The losses Bessel-Gaussian beams, a kind of non-diffracting beam, propagating through a hard aperture are studied, and a general formula is derived.
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