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铁路等级
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铁路等级
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铁路选线设计
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class of railway
铁路等级
根据铁路在国家铁路网中的作用、性质和远期客、货运量,以及最大轴重和列车速度等条件对铁路划定的级别。
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iron fertilizer
iron formation
Iron Foundry Site of Dongpingling
Iron Gate Hydro-Junction
IronGates
Iron Gown
Iron Gravel Palm
iron group
iron hat
Iron-Helmet Prince
Iron Hoops of Wheel Axles from Han Dynasty Tomb at Mancheng
iron hypothesis
iron implements in the Han Dynasty
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ironing machine
ironing mold
ironing stool
iron isotope hydrogeology
iron law of oligarchy
iron loss
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ironmaking blast furnace
iron-making machinery
ironmaking process with oxygen-enriched coalnjection
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