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贝尔电话实验室
telecom.
Bell Laboratories
;
Bell Telephone Laboratories
USA, space
Bell Telephone Laboratory
[美]贝尔电话实验室
mil., air.def.
bell telephone laboratories
贝尔电话实验室
美国
el.
Bell Telephone Laboratories
美国
贝尔电话实验室
geophys.
Bell Telephone Laboratory
贝尔 电 话实验室:
1 phrase
in 1 subject
Electronics
1
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