... Public Switched Telephone Network PSTN 公众电话交换网络 Public Transportation Operation Management 大众运输营运管理 Pugmill Mixer 拌合机 ...
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His research and teaching is focused on urban public transportation, including topics related to the operation, analysis, planning, and management of transit systems.
他的研究和教学方向是城市公共交通，包括运输系统的运作、分析、规划和管理。
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