To introduce and construe the differences between our country standard and other countries standards about safety of IT equipments based on IEC standard.
以IEC标准为基准，介绍和分析了我国IT类产品的安全标准与其他国家标准之间的差异。
Based on the standard IEC measurement approach some improvements are made.
在IEC标准测试法基础上做了改进。
OPC specifications and IEC 61499 standard both are protocols of User Layer of FieldBus Control System(FCS), and both are based on software component technology.
OPC规范和IEC 61499标准在现场总线控制系统中均属于用户层协议，二者都基于组件技术。
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