据Brown的一项美国环保局授权的研究表明，美国数据中心2006年度消耗610亿度电。
One study by Brown, commissioned by the us environmental protection agency, suggested that us data centres used 61bn kilowatt hours of energy in 2006.
中心点素坐标位于东经17度5分，北纬5度0分。
Center point coordinates are located at 17 degrees, 5 minutes east longitude and 5 degrees, 0 minutes north latitude.
顶焦度计又称对光机、查片机，可用来测量球光镜镜度、散光镜镜度、棱镜镜度以及散光轴线和光学中心点等，是眼镜片冷加工中必不可少的检测仪器。
The lensometers is also called measural lens dioptre instrument, to measure spherical lens dioptre, cylindric lens dioptre and axis, prism dioptre, and lens optical center etc.
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