| 单词 | external tank |
| 释义 | external tank A piece of foam the size of a briefcase had broken off from and external tank and punctured the left wing. The Sun Polyurethane-based foam covers most of the external tank. Houston Chronicle During and after launch much attention was paid to monitoring the external tank for the loss of insulation foam. Retrieved from Wikipedia CC BY-SA 3.0 This led to the one part rigid seal in the external tank being replaced with a two part flexible seal. Retrieved from Wikipedia CC BY-SA 3.0 The external tank would then be jettisoned, as on the actually flown shuttle configuration, and the orbiter would then perform its mission. Retrieved from Wikipedia CC BY-SA 3.0 |
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