校舍呈中空四边形，中央为运动场。
The school building formed a hollow square, with a playground in the middle.
校舍呈中空四方形，中央为运动场。
The school buildIngs formed a hollow square, with a playground In the middle.
研究了强制风冷中空气入口侧三角形肋片边缘形状对散热器换热性能和流动阻力的影响。
The effects of the air incoming velocity and the heat sinks structure on the comprehensive performance were investigated.
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