Experimental results show that this method can get more than 91% recognition rate and outputalphabet flow effectively, which proves the method is effective.
仿真实验结果表明，采用该方法能获得91%以上的单个手指字母识别率，并能有效输出汉语拼音。
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Why? Well, out presumably 'cause it's output, a because it's the first letter of the alphabet.