The results show that the apparent density of hard elastic polypropylene increases with a lower melt temperature, or a higher draft ratio, or a higher air blasting speed.
结果表明，熔体温度下降、所受拉伸比增加或冷却风速度升高均可使表观密度增加。
The results show that the maximum porosity of the membrane with distributing uniformly pore diameter are increased with the lowering spinning temperature, and increasing melt draft ratio.
结果表明，聚丙烯熔体的温度较低、所受拉伸比较大，所形成的微孔膜孔径分布均匀、孔隙率较高。
The effects of rotor speed, draft ratio and twist factor on the properties of elastic rotor-spun yarns were investigated, and the technology optimizing was done through the orthogonal test.
分析了转杯速度、牵伸倍数、捻系数对弹性转杯纱性能的影响，并通过正交试验对工艺参数进行了优化。
A servo control system composed of PMAC2 controller, servo controller, servomotor and industrial control computer has been developed for carbon fibre production to control the draft ratio precisely.
研制了一套应用于碳纤维生产的伺服控制系统，该系统由PMAC2控制器、伺服控制器、伺服电机及工控机组成，实现对牵伸比的准确控制。
The experimental showed that fibers length and neps were influenced by speed ratio between cylinder and worker, gilling number as well as combination of sliver feed weight and gilling draft.
试验结果表明梳理机上工作辊与锡林速比、针梳道数、喂入根数和牵伸倍数对涤纶条中的纤维长度、毛粒含量有组合影响。
When ratio of draft tube diameter to reactor diameter was 0.5, a maximum in solid loading appeared.
固体相含率先增加后减少，对固体相含率而言，当导流筒直径与反应器直径之比为0 5时，固体相含率最大；
When ratio of draft tube diameter to reactor diameter was 0.5, a maximum in solid loading appeared.
固体相含率先增加后减少，对固体相含率而言，当导流筒直径与反应器直径之比为0 5时，固体相含率最大；
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