The crystallinity of LDPE increased firstly and decreased later and the crystal defects might increase as drawingrate increased.
随牵伸速率的增大，LDPE相结晶度出现先增加后减小的变化，晶体缺陷增多。
2
The large diameter mesophase pitch carbon monofiber in uniform size was obtained by controlling the matching of extrusion flow and drawingrate.
熔纺时控制了挤出流量和牵伸速率的良好匹配，获得了丝径均匀的大直径中间相沥青炭单丝。
3
To solve the difficulty that the computing rate of microprocessor can not follow the drawingrate of the machine, a new realizable method is introduced.