Electronics【电子】
- of or relating to the production of a lower frequency from the combination of two almost equal high frequencies, as used in radio transmission（用在无线电传播中）外差的。
with obj.
- combine (a high-frequency signal) with another to produce a lower frequency in this way使产生外差（两个高频信号合并产生一个较低频率）。
词源
early 20th cent.: from HETERO- 'other' + -dyne, suffix formed irregularly from Greek dunamis 'power'.