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Yi Lin, left, SPEARS testing and research lead, and Ji Su, a polymer materials scientist and the task lead, during the removal of SPEARS batteries from thermal vacuum testing at NASA Langley.

Yi Lin, left, SPEARS testing and research lead, and Ji Su, a polymer materials scientist and the task lead, during the removal of SPEARS batteries from thermal vacuum testing at NASA Langley.
Yi Lin, left, SPEARS testing and research lead, and Ji Su, a polymer materials scientist and the task lead, during the removal of SPEARS batteries from thermal vacuum testing at NASA Langley. 图:NASA
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