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digital switch
el. 数字交换
met. 数字开关
telecom., amer. 数字交换
telecom., brit. 数字接线器包括时分接线器与空分接线器
textile 数字式开关
digital switch: 40 phrases in 8 subjects
Aviation6
Earth sciences1
Electronics21
Geophysics1
Rail transport1
Space2
Technology2
Telecommunications6