Air conditioning in the use of a period of time, screen pack, evaporator and air supply systems will build up large dust, dirt, producing a large amount of bacteria, virus.
空调在使用一段时间后，过滤网、蒸发器和送风系统上会积聚大量灰尘、污垢，产生大量的细菌、病毒。
And also given some suggestion on swimming pool design about circulating period, setting time of water supply and discharge, disinfection of water in pool, design of inlet outlet and overflow slot.
同时对游泳池设计中循环周期、充放水时间的设定、池水的消毒、进出水口、溢水沟的设计等提出建议。
We study the supply of and the demand for labors during 2005 to 2010 in Shanghai and predict the number of migrant labors required during the same period of time.
本文系统地研究了2005年到2010年间上海劳动力的供求趋势，测算了所需的外来劳动力数量。
The article illustrates the water supply and demand conditions in different period of time on the base of water resources analysis in Cixi city.
通过对全市水资源调查分析基础上，计算了不同时期全市水资源的供需状况。
The exporter often promises in a firm offer to supply certain quantity of goods at a fixed price within a stated period of time.
出口商往往会对一定时间段，固定的价格和数量的货物报实盘。
If the blood and oxygen supply is cut off severely or for a long period of time, muscle cells of the heart suffer severe and devastating damage and die.
如果缺血和缺氧是严重的或长期的，心肌细胞就会受到严重的毁灭性的损害和坏死。
If the blood and oxygen supply is cut off severely or for a long period of time, muscle cells of the heart suffer severe and devastating damage and die.
如果缺血和缺氧是严重的或长期的，心肌细胞就会受到严重的毁灭性的损害和坏死。
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