短語(yǔ)詞組短語(yǔ)concave reflecting mirror 凹面反射鏡concave spherical mirror [光]凹球面鏡cylindrical concave mirror 柱面凹鏡;柱形凹鏡a concave mirror 凹鏡concave mirror reflector 凹面反光鏡concave mirror focus 凹面鏡聚焦concave spherical reflecting mirror 凹球面反射鏡plano -concave mirror 平凹雙面反光鏡the shape of concave mirror 凹面鏡形狀 返回 concave mirror