axis of a parabola
常見例句
- The axes of the reflecting surfaces of the two parabola reflectors are overlapped at a common axis, and the focuses of the reflecting surfaces are overlapped at a common focus.
該兩個 拋物線反射鏡反射面的軸線重合于公共軸線處，且各反射面焦點重合 于公共焦點處。
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