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An acoustic coupler is a device for measuring the acoustic output of sound sources where the sound pressure is measured by a calibrated microphone coupled to the source by a cavity of predetermined shape and volume which does not necessarily approximate the acoustical impedance of the normal human ear
The trocar endo therapy device consists of two elements a trocar pin and a trocar sleeve to gain internal access and perform endoscopy
The purpose of ISO/TS 21189 is to provide the users with a mechanism whereby a supplier of an implementation of the requirements defined in ISO/TS 17426 may provide information about the implementation in a standardized manner
relevant and not misleading
Standard Guide for Testing the Thermal Properties of Advanced Ceramics not-eligible and documentation now covered