基于高斯光学理论，分析了无焦连续变倍准直扩束系统的原理，实现了无焦连续变倍准直扩束系统的设计，并得到了验证。
Based on Gauss optics, the theory of afocal zoom expander is analyzed, a afocal zoom expander is designed and successfully applied.
在奇异区内观察到倍周期、准周期、周期三、混沌等不同的相空间轨迹。
This paper first observed and confirmed the existence of period-three and chaos.
根据国土安全部提供的数据，“外国企业家”或者i- 526批准的数字自2007年已翻了三倍，数字自2004年以来一直呈增长之势。
According to data provided by the DHS, the number of "Alien Entrepreneur" or I-526 approvals have more than tripled since 2007. They have gone up every year since 2004.
根据国土安全部提供的数据，“外国企业家”或者i- 526批准的数字自2007年已翻了三倍，数字自2004年以来一直呈增长之势。
According to data provided by the DHS, the number of "Alien Entrepreneur" or I-526 approvals have more than tripled since 2007. They have gone up every year since 2004.
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