ความคิดเห็นที่ 18
อันนี้ สีดำครับ
The coated black tiles are located where temperatures can reach as high as 1,260C (2,300F). No two tiles are the same, because they are matched to the curvature of the shuttle.
Made from silica fibre, there are about 24,000 of these on any one shuttle. They dissipate surface heat so quickly that a tile can be held by its corners with a bare hand only seconds after removal from an oven, and while the centre of the tile still glows red.
Gaps between tiles are filled with a ceramic material known simply as gap filler.
จากคุณ :
specimen 
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7 ก.ค. 49 21:15:28
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