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钢轨
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钢轨
Encyclopedia
工学
[轨道部件]
释
rail
钢轨
为列车车轮提供走行和导向的轨道,是轨道结构最重要的部件。
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haleniae herba
Hale Observatories
Hale period
Hale sector boundary
Hale's law
Hale Telescope
Hale’s law of polarity
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half-additive process
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half-altitude triangle
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half-angle formula
half-angle theorem
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half Bessel function
half-boundedness
half-bounded operator
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