增加页清除程序的数量还会减少“软”故障(比如断电)的恢复时间，因为磁盘上数据库的内容在任何给定时候都是比较新的。
Increasing the page cleaners will also reduce recovery time from soft failures, such as power outages, because the contents of the database on disk will be more up-to-date at any given time.
定时录像，自动循环录像，断电后来电自动恢复功能，视频丢失报警功能。
Timing record, auto circulate record. , and auto resume after breaking off electronic. Give an alarm when video frequency losing.
电机内部设置超负荷保护器，电机荷载超过额定时，电机自动断电进入保护状态，确保不烧绕阻。
Motor set up internal overload protection, more than the rated load, motor, electrical power into the automatic protection of the state, ensure that it does not burn around resistance.
能接通、承载和分断正常电路条件下的电流，也能在规定的非正常条件（例如短路条件）下接通、承载一定时间和分断电流的一种机械开关电器。
Mechanical switching device capable of making, carrying and breaking currents in normal circuit conditions and, when specified, in given operating overload conditions.
能接通、承载和分断正常电路条件下的电流，也能在规定的非正常条件（例如短路条件）下接通、承载一定时间和分断电流的一种机械开关电器。
Mechanical switching device capable of making, carrying and breaking currents in normal circuit conditions and, when specified, in given operating overload conditions.
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