There is no gyral pattern seen here ( lissencephaly ) because this stillborn fetus was under 20 weeks gestation 此处所示为无脑回类型(无脑回畸形) ，因为这个死产胎儿妊娠期少于20周。
2.
Is mainly used for beading of the gyral wall 0 . 5 - 0 . 9 of stainless steel or cropper made metal wares Jy325 - 130内卷边机主要用于不锈钢铜等外形为回转体的薄壁0 . 5 - 0 . 9金属器皿的卷边。
