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High - speed Digital Subscriber Line?
高速数字用户线HDSL ？
youdao
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High - speed Digital Subscriber Loop?
高速数字用户环路HDSL ？
youdao
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High - bit - rate Digital Subscriber Loop?
高比特律数字用户环路HDSL ？
youdao
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High - bit - rate Digital Subscriber Loop?
高比特律数字用户环路HDSL ？
youdao