This paper mainly introduces ultrasonic Doppler baby's heart instrument verification item and technical requirement and verification technique, introduces the equipment and process for determination.
本文主要介绍了超声多普勒胎心仪超声源检定项目、技术要求及检定方法并介绍了所需要的测量装置，对测量过程进行了阐述。
This paper mainly introduces ultrasonic Doppler baby's heart instrument verification item and technical requirement and verification technique, introduces the equipment and process for determination.
本文主要介绍了超声多普勒胎心仪超声源检定项目、技术要求及检定方法并介绍了所需要的测量装置，对测量过程进行了阐述。
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