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er英英释意- 查字库
er
['i 'ɑr]
- abbr. 急诊室（emergency room）；大地回路（Earth Return）；回波测距（Echo Ranging）；工程报告（Engineering Report）；外阻（External Resistance）
- n. (Er)人名；(东南亚国家华语)余；(土)埃尔
英英释意
- 1. a trivalent metallic element of the rare earth group; occurs with yttrium