1. Go out to fly the kites and enjoy the difform kites.
请幼儿外出放飞风筝，欣赏不同形状的风筝。
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2. According to the practical instance of the apparatus modules of artificial satellite, the layout optimization models of the difform graph elements are discussed.
依照卫星仪器舱布局问题的实际应用状况，讨论多种图元的布局优化模型。
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3. According to the practical instance of the apparatus modules of artificial satellite, the layout optimization models of the difform graph elements are discussed.
