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airworthiness certification
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airworthiness certification
适航审定
适航当局依据适航法规标准,在全寿命周期内对民用航空产品(包括其部件、系统)进行的审查、监督和管理,确保其具有可接受的最低安全水平。
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GRAIL
grain
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grain boundary
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grain boundary attack
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grain boundary diffusion
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grain boundary segregation
grain-cash-forage rotation
grain circulation policy
Grain Coast
grain consumption subsidy policy
grain density test
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Grain Fills
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