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Terms for subject Rail transport containing 1 | all forms
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AAR Class 1北美一级铁路公司
end 1一位端
1 min power frequency withstanding voltage1 分钟工频耐受电压
No. 1 position side一位侧
1st impedance stage第一阻抗段
1st limit第一限度
User-to-User Signalling type 1用户到用户信令类型 1