It is important to select suitable sampling space and projection data for reducing cost and improving the image reconstruction efficiency in convolution backprojection algorithm.

利用卷积反投影算法对图像进行重建时，要降低成本，提高成像效率，就必须选取合理的抽样间距和投影数。

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In order to improve the efficiency of structural optimization, the next design point is determined through one dimension search after the projection direction is obtained.

为了改善结构优化的效率，在得到投影方向后通过一维搜索确定下一个点。

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Output efficiency controller, projection display, infrared sensor and non-contact thermometer.

输出效率控制装置，投影式显示设备，红外传感器和非接触温度计。

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Such efficiency can only be realized if planners can receive -- and bank on -- a reliable projection of the Defense Department's future spending stream.

CENTERFORSECURITYPOLICY: Center For Security Policy