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BS EN 3971 is part of the series of EN metallic material standards for aerospace applications
These compounds are intended for the manufacture of items in the form of extrusions
explains the principle of the test
Contracting out a provision of products and services to external providers
to air pollution and exhaust gases
Information technology. Security techniques. Time-stamping services - Mechanisms producing linked tokens Ingestion-build-132972 BS EN 3971 is part1 Scope This part of ISO IEC 18014 describes a general model for time stamping services producing linked tokens, describes the basic components used to construct a time stamping service producing linked tokens, defines the data structures used to interact with a time stamping service producing linked tokens, describes specific instances of time stamping services producing linked tokens, and defines a protocol to be utilized by time stamping services
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