1.Trilobal polycarbosilane(PCS) fibers were prepared by melt spinning PCS precursor through Y-shaped spinnerret.

1.以聚烷（PCS）为原料，经不熔和烧成制得三。

2.It was found that fibers of circular cross section produce greater cohesion in webs and slivers than do trilobal fibers.

2.圆形横截面在棉网和棉条中，比三形横截面能产生较大的粘着作用。