The reasons to cause low activity of dehydrogenation catalyst NDC - 4 were investigated by analyzing physical property and composition of the catalyst.

通过对低活性NDC - 4型脱氢催化剂物性与组分的分析，研究了影响催化剂性能的因素及催化剂低活性的成因。

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Thus you can consider NDC a kind of GTIN for drugs.

因此，可以认为NDC是一种用于药品的GTIN。

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A trading partner in the supply chain must be able to provide a pedigree based on an EPC that contains a certain national drug code (NDC).

供应链中的商业伙伴必须能够提供基于EPC的来源信息，包括确定的国家药品编码(NDC)。

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Calls for advanced research to identify ways of utilizing electronic technology to assist the NDC in addressing cross-agency challenges associated with declassification.

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Lastly, in order to promote new technologies to support declassification, the memorandum directs the Secretary of Defense and the Director of National Intelligence to support research to assist the NDC in addressing cross-agency challenges associated with declassification.

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Mr Mahama, from the National Democratic Congress (NDC) party, was Ghana's vice-president until the unexpected death of President John Atta Mills in July catapulted him into office.

BBC: Ghana election: NPP challenges John Mahama's victory