IEC60598系列标准
series standards of IEC60598
ISO 14000系列标准
ISO 14000 series of standard
ISO14000系列标准
ISO14000 environment manages in system
ISO 14000 Series Standards
ISO9000系列标准体系认证
the certificate of the ISO9000 series normal institution
TC 81系列标准新体系
new publications’ plan of IEC TC81
人工永久标准系列
series of permanent artificial standards