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邮政业标准体系
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邮政业标准体系
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Postal Industry Standard System
《邮政业标准体系》
寄递及其他由国家规定的邮政服务范围内的相关标准,按其内在联系形成的、科学的有机整体的行政法规。是全国标准化体系的一个子体系,是编制邮政行业各类标准和制定标准制修订计划的重要依据。
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frequency and duration method
frequency approach
frequency attribute
frequency band
frequency bandwidth constraint
frequency bridge
frequency calibration
frequency capture
frequency centre
frequency characteristic
frequency characteristic of sound pressure
frequency chart
frequency chirp
frequency coding
frequency collapse
frequency comparision
frequency compensation
frequency conversion
frequency conversion circuit
frequency conversion technique
frequency conversion transformation of fan and water pump
frequency converter
frequency counter
frequency criterion
frequency curve
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