The insulating foam prevents ice from forming on the tank when it is filled with 500,000 gallons of supercold liquid hydrogen.
当容器内充满50万加仑的超冷液态氢时，绝缘泡沫可以防止冰在容器上形成。
While Nasa's focus was on how to prevent the insulating foam breaking off, concerns also emerged earlier this year about the build-up of ice on the outside of the fuel tank.
正当美国宇航局将工作重点放在如何防止泡沫绝缘材料脱落时，今年年初人们又开始担心燃料箱外侧集结的冰是否也会对航天飞机的飞行安全构成威胁。
A crack was found in the shuttle's insulating foam, and NASA is trying to figure out if they can go ahead with the plan for the July launch which has already been delayed twice.
在航天飞机的绝热泡沫上发现了一道裂纹后，NASA正在努力作决定他们是否该继续执行已经被推迟了两次的7月的航天飞机发射计划。
A crack was found in the shuttle's insulating foam, and NASA is trying to figure out if they can go ahead with the plan for the July launch which has already been delayed twice.
在航天飞机的绝热泡沫上发现了一道裂纹后，NASA正在努力作决定他们是否该继续执行已经被推迟了两次的7月的航天飞机发射计划。
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