KGS could also improve the pathological changes in microstructure of bone, increase the thickness of trabecula and cortex (P <0.05) , reduce the trabecular gap and bone marrow cavity (P<0 . 05) .
Gas hole and inclusion can be reduced by properly increasing thickness, and quality of the chilling layer, uniformly spraying and cleaning the mould cavity on time.
适度增加激冷层厚度，提高激冷层品质，均匀喷涂并及时清理模具型腔，可减少气孔和夹杂物缺陷。
3
The height and diameter of each part in laryngeal cavity, the length, breadth and thickness of vestibular folds and vocal folds were measured, analysed and compared.