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specifies the requirements for thread form
b) Optical
or other gaseous media as they pass through a duct
Active and adaptive passive noise-control systems are not covered in detail in this International Standard
BS ISO 3534-2
Acoustics. Recommended practice for the design of low-noise machinery and equipment - Planning Ingestion-build-201039 specifies the requirements for thread1 Scope This International Technical Report is an aid to understanding the basic concepts of noise control in machinery and equipment. The recommended practice presented here is intended to assist the designer at any design stage to control the noise of the final product. Methodical development of products was chosen as a basis for the structure of this document (see Clause 4). The list of design rules given in this International Technical Report is
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