瑞 ruì HSK7 token made of jade, lucky, auspicious Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: rayl All meanings 3 ruì 3 auspicious 2rayl 1 1 sentence for 瑞 (ruì — rayl) 这种新型声呐设备的声阻抗被精确控制在五十个瑞以内。 zhè zhǒng xīnxíng shēngnà shèbèi de shēng zǔkàng bèi jīngquè kòngzhì zài wǔshí gè ruì yǐnèi. The acoustic impedance of this new type of sonar equipment is precisely controlled within fifty Rayls. Source: Dong Chinese Dictionary