求翻译：中国东方电气集团公司是中国最大的发电设备制造和电站工程承包企业之一，是中央确定的涉及国家安全和国民经济命脉的国有重点骨干企业之一是什么意思？

China Dongfang Electric Corporation is China's largest power generation equipment manufacturing and power station engineering contracting enterprises one of the is set by the central authorities relating to national security and one of the lifeline of the national economy of the State-owned key ente

china eastern electric Group Co. , Ltd. is one of the largest Chinese power generation equipment manufacturing and power plant engineering contractor, is one of the enterprises which defined by the central authorities involved in national security and the economic lifeline of key state enterprises i

Chinese of East Electricity Group Company is one of the China biggest generating set manufacture and power plant project contract enterprises, is the central determination involves one of the national security and national economy life state-owned key shareholding systems

China Dongfang Electric Corporation is China's largest power generation equipment manufacturing and power station engineering contracting enterprises one of the is set by the central authorities relating to national security and one of the lifeline of the national economy of the State-owned key ente

China Dongfang Electric Corporation is China's largest power generation equipment manufacturing and power station engineering contracting enterprises one of the is set by the central authorities relating to national security and one of the lifeline of the national economy of the State-owned key ente