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bell telephone laboratories
mil., air.def.
[美]贝尔电话实验室
Bell Telephone Laboratories
gen.
贝尔电话实验
研究
所
美
el.
贝尔电话实验室
美国
telecom.
贝尔电话实验室
;
贝尔电话研究所
现属于 Lucent Technologies
English thesaurus
Bell Telephone Laboratories
abbr.
BTL
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