The plant is operated entirely by remote control and monitored by closed circuit television or periscope.这个工厂完全用遥控操作,而且用封闭电路电视或展望镜来监视.Researchers observed the children via closed - circuit television and recorded their a...

The efforts on closedown and suspension of small sugar refineries, small saccharin refineries and small paper mills are also being carried out in steps.关停小糖厂 、 小糖精厂、小造纸厂的工作也已逐步展开.The factory owner sprang the news of clos...