axis of symmetry

基本解釋

And, of course, that only works if the solid has some axis of symmetry.
當然，前提是物體的對稱軸存在。
The decline of brightness from its central peak along this axis of symmetry is different in the opposite directions.
在相反的延伸方向上，沿著對稱軸的亮度峰值的衰減是不同的。
Moment of inertia: turning around its axis of symmetry, object has the character keeping speed and the direction of the axis of rotation not changing.
轉(zhuǎn)動慣性：物體在繞著自己的對稱軸轉(zhuǎn)動時，具有保持轉(zhuǎn)速和轉(zhuǎn)動軸方向不變的性質(zhì)。