拉伸比 meaning in Chinese

draw ratio, extension ratio
stretch ratio

For flat films , the cellulose chains are almost unoriented within the plane parallel to the film surface
另外，刮膜速度、拉伸比和吹胀比对膜强度和超分子结构的影响也很大。
When draw down ratio was greater than 1 , the dope thread in the air gap was axially drawn with the rising of orientation degree so the fiber tenacity was strengthened
在喷头拉伸比大于1的情况下，原液细流在空气层中得到轴向拉伸，加大了初生纤维的取向度，所以纤维强度得到加强。
With increasing blow up ratio , both the axial orientation and the crystallinity of tubular films increase . with increasing draw down ratio , only the axial orientation increases while the crystallinity does not change significantly
管膜的结晶度随吹胀比的增加而增大，当拉伸比增加时结晶度没有明显变化。