astroid

常见例句

Construct the astroid as the envelope of a family of lines.
作由線族包絡線所形成的星狀線.
Construct an animation of three concurrent tangents of the astroid.
建搆一動態繪圖：展示星狀線共點的三切線。
Construct an animation showing the inscribed ellipse of an astroid.
建搆一動態繪圖：展示星狀線的內切橢圓。
Obviously, a line of astroid nebula is a result which the star old age evolves.
可見，行星狀星雲是恒星晚年縯化的結果。
Show how a deltoid of maximal size slides inside a stationary astroid.
在固定不動的星狀線內，有一個最大的三角線在其間滾動。
Construct rotating cardioid and astroid while remaining orthogonal to each other.
作鏇轉的心髒線和鏇轉的星狀線，且彼此維持正交。