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DE???? ??
?? 7??? ???? ??? ??? ??? ??.
?? ???? ???? ??? ??? ??? ??? ????: .
Military Standard of the People's Republic of China-General Armament Department, ???? ??
Professional Standard - Aerospace, ???? ??
Professional Standard-Ships, ???? ??
Professional Standard - Aviation, ???? ??
Military Standard of the People's Republic of China-Commission of Science,Technology and Industry for National Defence, ???? ??
National Metrological Technical Specifications of the People's Republic of China, ???? ??