石油产品的色泽: color shade of petroleum productcolor shade of petroteum product
呈: Ⅰ动词1.(呈现) assume (form, colour, etc.) 短语和例子呈出笑容 show a smiling face; 龙凤呈祥 prosperity brought by the dragon and the phoenix; 大海呈天青石色。 the sea was of a lapis lazuli blue. 叶呈椭圆形。 the leaf is