(1)高い屈折率を持つ
(2)一酸化鉛を含むガラス
(3)glass containing lead oxide
(4)has a high refractive index
(5)glass containing lead oxide; has a high refractive index
さらに詳しく
(1)鉛筆の先を鋭くするための回転式の道具
(2)a rotary implement for sharpening the point on pencils
