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- back drafting ratio 后区牵伸倍数
- In this paper, the relation of spandex content and pre drafting ratio is induced to. 文中还导出氨纶丝含量与预牵伸倍数间的关系式。
- A pressure-bar is put on the back drafting zone so as to remove the back-surrounded arc and to make more uniform drafting.It also gives a good method to reduce the hairness. 通过在后牵伸区增加一附加压力棒消除反包围弧,从而提高牵伸效果,并对其产生的毛羽增多的弊病采取了建议性措施。
- Model BS368 Lap Draw Frame is a high efficient preparation machine for Comber, easy operation, high automation and reasonable doubling of slivers and drafting ratio. BS368型条并卷机是高效的精梳准备设备,操作简单,自动化程度高,棉条合并数、牵伸倍数分配合理。
- By adding auto-control driving servomeechanism system on DB200SN rotor spinning frame,pure cotton bunchy yarn of rotor spinning is spun by changing the drafting ratio with different feed quantum. 在2种长丝超喂率下,通过调整复合纱的捻系数使棉纤维和涤纶长丝复合以纺制不同类型的转杯纺复合纱。
- This paper studied the influence of back draft,tuist factor and top roller hardness on yarn hairness as well as the technology measure of decreasing yarn hairness in FA502 spinning frame. 主要研究了FA502型细纱机纺纱时,后区牵伸倍数、细纱捻系数和皮辊硬度对成纱毛羽的影响。
- It is found that the stock corners tend to sharp unavoidably in grooveless rolling.The degree of sharpened corner has relations with draft ratio and the ratio of height to width of pre-rolled stock. 结果表明,无孔型轧制时轧件的角部将不可避免地趋于尖化,尖化程度与压下率及轧前轧件高宽比等因素有关;
- 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。
- The Effect of Drafting Ratio at Back Zone on Yarn Quality in Compact Spinning 后区牵伸倍数对紧密纺高支棉纱成纱质量的影响
- High speed, large draft ratio drafting system 超大牵伸装置
- hotair explosion = back draft explosion 热空气爆炸
- ventilated induced flashover = back draft explosion 通风诱发型轰然
- Rose bushes shoot again after being cut back. 玫瑰丛修剪後还能再长出新枝。
- A STUDY OF INA-V DRAFTING SYSTEM IN THE BACK DRAFT ZONE 西德INA-V型牵伸装置后区工艺特性的试验研究
- He trudge three hour in the snow to get back home. 他在雪中跋涉三个钟点才回到家。
- The crowd fell back to let the players through. 人群后退让运动员们通过。
- Do exercise every day and you'll be back in condition. 每天锻炼锻炼,你很快会恢复健康的。
- The ship beat back against a monsoon. 船逆着季风艰难地行驶。
- I flap the flies away but soon they fly back. 我把苍蝇赶走,但一会儿又飞回来了。
- I never lend books; you never get them back. 我的书决不外借,因为总是有去无回。