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signalling engineering
meaning in English
信号工程学
Examples
Labor force quota for
signaling engineering
in city transit system
城市轨道交通通信信号工程劳动定员定额
Standard for constructional quality acceptance of railway
signal engineering
铁路信号工程施工质量验收标准
Related Words
signalling device
signalling disc
signalling equipment
signalling exchange
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