er
['i 'ɑr]
- abbr. 急診室(emergency room);大地回路(Earth Return);回波測(cè)距(Echo Ranging);工程報(bào)告(Engineering Report);外阻(External Resistance)
- n. (Er)人名;(東南亞國(guó)家華語(yǔ))余;(土)埃爾
英英釋意
- 1. a trivalent metallic element of the rare earth group; occurs with yttrium