顶角

顶角
dǐngjiǎo
(1) [point angle]∶在切削工具顶尖处或刀刃处的尖角
(2) [apical angle]∶弹头轮廓线夹角在弹头顶尖上的切线夹角
(3) [parietal angle]∶从耳穴至前囟和至人字缝尖的交叉线所形成的角
(4) [vertex angle]∶三角形底边所对的角

Advanced Chinese dictionary. 2013.

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