Nasa engineers are looking at photos and video of a torn solar panel from the international space station 美国国家航天航空局工程师正在观看国际太空站太阳电池板的有关照片和录像。
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An independent review board is urging nasa to replace three heat shield panels where inspectors found microscopic cracks on their external layers 一个独立复审委员会呼吁国家航天航空局更换三块隔热瓦，检查人员在这些隔热瓦的外层发现了细微的裂缝。
