求翻译：煤矿井下人员定位系统主要包括：用户管理、人员跟踪、查询统计、考勤管理、历史数据的查询和报表打印，出、入井人员唯一性识别，下井超员、下井超时、工作异常人员报警、安全隐患LED大屏提醒、事故紧急搜救等功能是什么意思？

Underground coal mine personnel positioning system include: user management, personnel tracking, query statistics, attendance management, historical data query and report printing, a unique identification of personnel into the wells go down the overcrowding, go down the timeout, the alarm of abnorma

Coal Mine some staff orientation system mainly includes: user management, personnel tracking, query statistics, attendance management, historical data, query and printing of the report, out of, into a well recognized only one of the wells, and wells are overcrowded, the timeout, the abnormal personn

The coal mine mine shaft personnel positioning system mainly includes: The user management, the personnel track, the inquiry statistics, the checking attendance management, the historical data inquiry and the report form printing, leaves, enters the well personnel uniqueness recognition, goes into a

Coal mine personnel positioning system include: tracking, query statistics, user management, personnel management, historical data query and report printing, out, well the only recognition, overcrowding, down under overtime, working personnel alarms, safety features such as LED display reminders, em

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