在发动机药柱的前翼燃烧消失后， 前封头开口区域的切向涡开始变得强烈；
The tangential vortex in the forward opening begins get strong after the forward fins of grain burned out.
传统的线圈成型模只能成型线圈的端部形状，而该装置在此基础上增加了对线圈的预弯、铲头、封焊等功能，在定子线圈热压前一次完成以上各工序。
But in this shaping installation, besides the mentioned functions, shaping, shoveling, soldering and sealing of the stator coils can be completed at the same time before hot pressing.
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