求翻译：从2012年3月20号下午15:30开启机组对房间制热，同时通过热源水从土壤中吸热，每天机组从15:30工作到第二天11:30，共20小时，再停机恢复4小时；是什么意思？

Open from 15:30 pm on March 20, 2012 units for room heating, endothermic heat source water from the soil every day crew work from 15:30 to next day 11:30, a total of 20 hours, and then shut down the recovery 4 hours;

From March 2012 20 th, at 15:30 on units of the room, with a hot water heat dissipates heat from the soil every day units, from 15:30 to 2 days, 11:30, a total of 20 hours, 4 hours downtime recovery;

20 afternoon 15:30 opening unit is March hot from, 2012 to the room system, simultaneously through the heat source water from the soil the heat absorption, the daily unit from 15:30 works to second days 11:30, the altogether 20 hours, the engine off restores again for 4 hours;

From March 20, 2012 opening units for room heating, heat source water through heat absorption from the soil daily unit from 15:30 to 11:30 the next day, a total of 20 hours, and then resuming for 4 hours of downtime;

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