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步进系统 步进制 史特鲁乔式
step-by-stepsystem
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史特鲁乔式
step-by-step system strowger system
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史特劳格尔制 史特鲁乔式
strowgersystem
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步进系统
step-by-step system
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步进制
step-by-step system
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步进制拨号
step by step dialing
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步进制的
step-by-step type
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步进制机键
step by step apparatus
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步进
step-by-step ◇步进操作 step-by-step operation; 步进传动 step-by-step drive; 步进法 step-by-step method; st...
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步进制自动电话系统
step-by-step automatic telephone system
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步进制电话局
step by step central office
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步进制交换机
step-uexchange stuexchange
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步进制接线器
step by step switch
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步进制选择器
step by step selector
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步进制终接器
step by step connector
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步进式系统
stepping system
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步进制电话交换机
step by step telephone switching system
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步进制机键测试器
step by step switch test equipment
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