string galvanometer

instrument that provided the first practical electrocardiogram

en-GB/ˈstɹɪŋ ˌɡælvəˈnɒmɪtə/
en-US/ˈstɹɪŋ ˌɡælvəˈnɑmɪtɚ/

ক্যাটাগরি:

galvanometer