But we were trying to address three key problems that plague digital projectors: lack of brightness, lack of contrast, and lack of sharpness.

但是我们一直试着解决困扰数码放映机的三大难题：亮度较低，对比度较差，清晰度不足。

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Finally, through the concrete experiment and analysis, validate the feasibility, validity and correctness of algorithms which are used to resolve the three key problems in system.

最后，对解决系统中三个核心问题的相应算法，通过具体的实验及对比分析验证了其可行性、有效性和正确性。

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Finally, through the concrete experiment and analysis, validate the feasibility, validity and correctness of algorithms which are used to resolve the three key problems in system.

最后，对解决系统中三个核心问题的相应算法，通过具体的实验及对比分析验证了其可行性、有效性和正确性。

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