In circle triangle expression liquid flow direction, if the triangle acme outward, showed the liquid flow outputs outward, expressed this is an oil pump.
圆圈中的三角形表示液流方向，如果三角形尖端向外，说明液流向外输出，表示这是油泵。
Three tables in a circle, triangle and square shape are located in these Spaces, providing opportunities for interaction.
三个圆形的、三角形的和方形的桌子安置在这个空间中，为合作交流提供平台。
Rectangle, triangle can be all in a circle.
长方形，三角形都能在圆里。
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