| 释义 |
gal·va·nom·e·ter
\ˌgalvəˈnäməd.ə(r)\ noun
Etymology: galvano- + -meter
: an instrument for measuring a small electric current or for detecting its presence or direction by means of the movements of a magnetic needle or of a coil in a magnetic field that registers usually on a scale or by a moving beam of light reflected from a mirror attached to the needle or the coil |