航空航天系列。酚醛树脂浸渍的六角形碳纤维管状蜂窝的蜂窝材料。产品标准。
Aerospace series. Honeycomb materials with tubular cells, hexagonal carbon fabric, phenolic resin impregnated oriented at plus over minus. Product standard.
航空航天系列。酚醛树脂浸渍的牛皮纸六角形管状蜂窝的蜂窝材料。产品标准。
Aerospace series. Honeycomb materials with tubular cells, hexagonal, kraft paper, phenolic resin impregnated. Product standard.
就拿蜂巢中的六边形蜂窝来说，为什么它不是三角形或者正方形的呢？
Take the beehive, and its hexagonal honeycomb. Why does a hive not have triangular or square cells instead?
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