Before revision: Synthetic parts It is common in the engineering of parts, subassemblies, and higher assemblies to treat the definition of a certain part as a very well-defined concept, with every last detail controlled by the engineering drawing or its accompanying TPD documents .
After revision: Synthetic parts It is common in the engineering of parts, subassemblies, and higher assemblies to treat the definition of a certain part as a very well-defined concept, with every last detail controlled by the engineering drawing or its accompanying technical product documentation (TPD) .