为此，我们的研究集体提出了一种新的关于数学表达式识别的设计思想，并写出了程序。
To this end, our research group has designed a recognition system for mathematical expressions in printed document.
研究了线结构光传感器的数学模型，并给出了齐次坐标系下的表达形式。
The mathematical model of single line structured light transducer is studied and it's expression under homogenous coordinate is given out.
并研究了应用过渡切割方法解决小角度存在的问题，给出了过渡切割时各参数的数学表达式。
And transition cutting was studied in order to solve small Angle problem, and parameters in transition cutting were also given.
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