当推送尤里·加加林进入轨道的预定时刻来临之际，他只是简单地按下一个按钮闭合点火电路并看着发动机启动。
When the appointed time came to blast Yuri Gagarin into orbit, he simply pushed a button that completed the ignition circuit and watched the motors start.
本方法实现简单，抗噪能力强，是一种实用高效的闭合曲线检测方法。
The proposed method is easy to implement and has strong anti-noise ability.
提出了一种在较简单图像中提取多个完整图形闭合外边界的方法。
A method of obtaining multiple close outside boundary of simple images was given.
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