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See Chinese contents: GB/T 11544-2012 GB/T 11544-2012: Belt drives -- Classical and narrow V-belts -- Dimensions (system based on datum width)
This document specifies the general security function requirements and security assurance requirements for critical network device. This document applies to critical network device; provides a basis for network operators to purchase critical network device; is also suitable for guiding the research and development, testing, and service of critical network device.
