But distilling tower temperature control is a typic big time-lagsystem, and the control of it is always a difficult problem in coak producing industry.
但由于氨塔温度控制属于典型的大时滞系统，对这种系统的自动控制一直是焦化生产控制中的一个难题。
2
Prior to this, there was a lagtime of a few seconds (depending on your system) if you wanted to zoom in or out on an image.
在此之前如果你想放大或缩小图像时会有几秒的时滞（取决于你的系统）。
3
It give out an efficient method of saw band machine tensile systemlag determination through the analysis of timelag state equation on high elasticity mandril model saw band machine tensile system.