| 单词 | 2g | 
| 释义 | > as lemmas2G  13.  Telecommunications Used with a numerical prefix (as  1G,  2G, etc.) in the names of any of several generations of mobile telecommunication technology, each representing a different stage of development of such technology. Frequently attributive.Recorded earliest in 3G n. ΚΠ 1997    Re: Users Opinions sought on CDMA in  alt.cellular 		(Usenet newsgroup)	 6 May  				3G systems are heading towards a non-IS-95 CDMA interface. 2000    Network World 23 Oct. 72/3  				2.5G will not support two-way visual communication. 2009    C. Kappler UMTS Networks & Beyond ii. 17  				The early 1G Networks were of course completely analogue. 2015    M. Maternia in  J. T. J. Penttinen Telecommunications Handbk. xxv. 890  				The 2G system could offer services with the theoretical peak data speeds of up to 171.2 kbps. < as lemmas  | 
	
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