作者编制了计算程序方框图，有助推广应用可编程计算器以提高计算效率和准确度。
The author has designed the block diagram of calculating procedure, which is significant for extending the use of programmable calculator and to increase calculating efficiency and accuracy.
本文用计算器计算的方法代替作图，求算面积，可提高效率和精度。
Using computer to calculate forest base area instead of drawing can raise efficiency and precision.
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