These and many other commercial free data sources use the spherical Mercator data projection (identified by European Petroleum Survey Group [EPSG] code 900913).

这二者以及很多其他的商业的免费数据源都会使用球形的 Mercator 数据投影（由 European Petroleum Survey Group [EPSG] code 900913 标识）。

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First, grating is projected on measured free surface, and height data of each point on free surface is measured by the grating projection method.

首先将矩形光栅投影在被测表面上，利用光栅投影法测量自由曲面上每点高度信息。

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Optimization problem with nonlinear inequality constraints is discussed. With the help of the generalized projection, a unified algorithm model with a series of free parameters is presented.

对非线性不等式约束最优化问题进行了讨论，借助广义投影建立求解问题的一个含系列自由参数的统一算法模型。

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In this exercise they make an internal projection of a company's free cash flow over a ten-year period.

FORBES: This Old Metric

We're sure there are more than a few super-sized rear-projection TVs that will continue to bring the big game to basements and dens everywhere, feel free to celebrate an old friend in the comments below.

ENGADGET: Mitsubishi is ending rear-projection TVs, ceases production of DLP and laser models