trans portation 运输费
Teletrans Portation 幻影移形
portation Company 储运公司
calcine trans-portation 焙砂输送
AdvancedUrbanTrans- portation Information System 先进城市交通信息系统 ; 城市交通信息系统
north-south trans-portation 南北交通
Tra portation and Communication 交通与交流
international freight trans-portation airport 国际货运机场
The paper analyzes the haulage force of mine locomotive and its brake force, and points out some errors in various text books on portation mine transportation.
分析了矿用电机车的牵引力与制动力，指出各种矿山运输教材中机车章的错误。
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