名词
中文翻译：同步数字分层体系
同义词：
['synchronised digital hierarchy', 'synchronous digital network']
例句：
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1. The synchronous digital hierarchy is a crucial component of thecommunication infrastructure.
同步数字分层体系是通信基础设施的关键组成部分。
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2. The synchronous digital hierarchy has been widely adopted in variousindustries for its efficiency and reliability.
同步数字分层体系已被广泛应用于各个行业，因其效率和可靠性而广受欢迎。
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3. The development ofthe synchronous digital hierarchyhas greatly improved the speed and quality ofdata transmission.
同步数字分层体系的发展极大地提高了数据传输的速度和质量。