tangentialadj.离题的；肤浅的；切线的；相切的tangential firing切向燃烧tangential boiler切圆锅炉tangential chaser切向螺纹梳刀tangential hobhead切向刀架tangential support切线支座tangential hobbing切向滚削tangential dipoles切向偶极子tangential loading切向荷载tangential profile切线剖面tangential section切向切片,弦切面,切向截面