The outer door is a polyurethane foamy one with a glazing unit observation window, for better perspectivity and heat preservation.
外门为聚氨

门,中空玻璃观察窗,透视性好,保温性能好。
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烹饪法 
家基地 Superclusters themselves aren't just randomly distributed through the Universe either: they appear to fall along tremendously long interconnected and intersecting filaments, making the Universe appear almost foamy on the biggest scales, like a sponge.
它们似乎是沿着非常长、相互联系、相互交叉的细丝落下的,使宇宙从最大的尺度
看几乎像泡沫状的,就像
绵一样。
丽新世界