The MAC Service does not guarantee the delivery of Service Data Units.
MAC服务没有保证服务数据单元的传输。
Note: Data of national total include the units directly under State Forestry Administration.
注：全国合计数包括国家林业局直属单位数据。
Statistical analysis of reliability data for power system units is valuable for electric industry.
电力系统元件可靠性数据的统计分析对电力工业有重要意义。
Statistical analysis of reliability data for power system units is valuable for electric industry.
电力系统元件可靠性数据的统计分析对电力工业有重要意义。
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