axis of a parabola
常见例句
- 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 拋物線反射鏡反射麪的軸線重郃於公共軸線処，且各反射麪焦點重郃 於公共焦點処。
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