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分 类号
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专利号码分类索引
patents allocation index
信号分类机
signal classifier
分类号
印
classification mark
分类号
码
class number
分类号
码
classification symbol
分类电话号码簿
classified telephone directory
国际无线电呼号分类表
International Radio Service of Call Signs
荷载分类代号制
load classification number system
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