sugar - acid proportions
英
美
- acid n.酸；酸性物质；迷幻药adj.酸的；酸性的；尖酸的
- proportions n.大小名词proportion的复数形式.
- sugar n.糖，食糖；糖缸；甜言蜜语，阿谀奉承；宝贝，心肝v.使甜；在...上撒糖
- The concentration ofL-serine and formaldehyde were determined by chromatic acid colorimetry.
采用铬变酸比色法测定甲醛和丝氨酸浓度。
