垂直部 meaning in Chinese

pars perpendicularis
partes perpendicularis
squama perpendicularis

Methods : the anatomic relationship between the cross point ( a ) of the sigmoid and the transverse sinus and the asterion ( s ) , the cross point of the perpendicular and the horizontal ( b ) and point of the fissure of the occipital - mastoid at the fundus of the mastoid ( c ) were determined . then the length of a - s and b - c were measured . results : ( 1 ) the a point was lateral and inferior to the asterion , 10 . 8 + 1 . 1 mm on horizontal plane , 3 . 5 + 0 . 7mm on the longitude plane
方法：确定横窦和乙状窦的交界内下缘比点）和星点（枕乳缝和人字缝交叉点， s点）的解剖关系；乙状窦垂直部和水平部交汇处内下缘旧点）和枕乳缝乳突基底水平处点）的关系。测量as和b c点的距离。结果： l横窦和乙状窦交点的位于星点外下方，横断面上，平均距离为10