addendum
英 美
The measuring instrument can measure addendum circle and dedendum circle diameter of odd-tooth gears.
这种测量工具用以测量奇数齿齿轮的齿顶圆和齿根圆直径。
I mean an addendum which he called postscript.
我的意思是是他叫做补充说明的附录。
The quantum theory is not just an esoteric addendum .
量子理论并不只是一个深奥的附录。