root apex beyond crossing point

... root apex 根锥顶 root apex beyond crossing point 根锥顶至相错点的距离 root apex to back 根锥顶至安装基准面距离 ...

机械类常用英语:齿轮及齿轮加工... ... 28． Root apex 根锥顶 29． Root apex beyond crossing point 根锥顶至相错点的间隔 ...