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Noise properties in breaking and loose contacts and their effect on quality degradation of digital s
Electric contact discharge is subject closely related to digital information transmission, and integrity of digital sign......
地铁车辆的设计影响到地铁的今后运营与维修,因此把好设计关十分重要.在参与南京地铁与ALSTOM的设计联络中,就设计过程中的车辆制......
