This algorithm greatly reduces times of addition operation which takes time for scalar multiplication algorithm by introducing signed and unsigned sliding window coding methods.
此算法通过引入有符号和无符号滑动窗口编码方法，大大减少了标量乘算法中费时的加法运算次数。
European sliding window, can open with a big area. Smooth operation and convenient?installation, with stainless steel window-screen, preventing mosquito and other winged insect.
欧式推拉窗（门），可大面积开启，推拉顺畅、安装方便，配上不锈钢防蚊纱窗，使您免受蚊虫之苦令您的生活更舒适。
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