First, create a square surface and then extrude it a little to create a cube.
首先，画一个正方形平面，通过挤压操作来创建一个长方体。
Blister were observed in the surface of square pipe after being hot zinc-plated.
方管表面热镀锌后出现不同程度的鼓泡现象。
Suppose that the total surface area must be 27 square feet.
假定总外表面积必需27平方英尺。
Suppose that the total surface area must be 27 square feet.
假定总外表面积必需27平方英尺。
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