dual band
英
美
- n.双频；指手机可以在GSM900/1800频段之间自由切换；以保持通话不断
双语例句
- In order to study the optical feedback characteristics at the dual frequency laser, a birefringent external cavity was studied throughboth theoretical analysis and experiments.
摘要为了研究双频激光器的光回馈特性，采用双折射外腔光回馈的方法，进行了理论分析和实验验证，取得了双频激光器中条纹倍频现象的数据。
用作名词 (n.)
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