The higher the temperature and the longer the resident time was, the higher the oligomer content was during polyester melt trans - fer course at a fixed screw rotation speed.
在一定的螺杆转速下，温度越高，停留时间越长，聚酯熔体输送过程中齐聚物含量越高。
It trans - forms the speed signal into pulse frequency signal to measure speed and indicate the speed.
本文给出了一种齿轮测速的方法，将转速信号转化为脉冲频率信号进行测量和显示。
Rail trans has the following characteristic: Great transportation amount, quick speed, safe and comfortable, small pollutes, small area, high combined benefits.
轨道交通具有运量大、速度快、安全舒适、污染小、占地面积小、综合效益高特点。
Rail trans has the following characteristic: Great transportation amount, quick speed, safe and comfortable, small pollutes, small area, high combined benefits.
轨道交通具有运量大、速度快、安全舒适、污染小、占地面积小、综合效益高特点。
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