最令航天业担忧的是钇供应紧张。钇是高温防护涂层中的关键成分，可防止发动机和涡轮在高温下“熔化”，一旦无法定期施涂相关涂层，发动机便无法正常服役。
从“十五五”规划建议提出“持续巩固拓展脱贫攻坚成果”，到2026年中央一号文件明确提出“实施常态化精准帮扶”，着眼的正是确保长久守住不发生规模性返贫致贫底线。
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