h=（da-df）/2为公式 da为齿顶圆直径，df为齿根圆直径
弦齿高 chordal addendum ; chordal height
齿高收缩 Depthwise taper
工作齿高 Working depth ; [机] working depth of tooth
等齿高 Zero depthwise taper
法向弦齿高 Normal chordal addendum
中点测量齿高 Mean measuring depth
全齿高齿 depth teeth ; full depth teeth ; full-depth tooth ; depth tooth
固定弦齿高 Constant chord height ; constant cord height
硬合金齿高度 carbide extension
镶齿齿高 insert extension
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增加齿高可以提高牵引力和驱动效率。
The increase of lug height may result in the improvement of drawbar pull and driving efficiency.
分析了滚刀齿高和齿顶倒圆半径对所切齿轮齿根弯曲应力的影响。
And it analyzed that hob tooth height and tooth top pour round radius impacted on gear tooth root crooked stress.
计算结果表明，准端面圆弧齿轮基本上是沿齿高方向等强度分布，优于法面圆弧齿轮。
Computing result indicates that quasi transverse circular arc gear is basically equal on strength distributing along tooth depth direction and it is superior to normal plane circular arc gear.
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