The dynamic behaviors of a kind of SIR epidemic model with two different vaccination strategies and saturation infectious force are researched.
研究了两类不同免疫方式下具有饱和传染力的SIR流行病模型的动力学行为。
With such character I have always emphasized the kind of iron hand in a velvet glove, to force in different ways and much more to like the internalization language in works.
在这样的性格下我强调一种外柔内刚，发力的方式不同，作品上更喜欢内化的语言。
The present invention relates to mechanics, and is one kind of gear with different bearing capacity for forward and reverse force transmission.
本发明的名称是由双圆弧和渐开线组成的不对称齿形的齿轮传动。它属于机械领域。
The present invention relates to mechanics, and is one kind of gear with different bearing capacity for forward and reverse force transmission.
本发明的名称是由双圆弧和渐开线组成的不对称齿形的齿轮传动。它属于机械领域。
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