“松香”造句
2024年06月22日 03:20:43
从中提取的
松香和鞣酸是化学工业上很需要的.
The risin and tannin that can be extracted from it are sought by the chemical industry.
从3点钟以后,它们就燃烧着
松香.
From three o'clock onward they would be burning resin.
在实验室内用一 步法 合成了
松香改性壬基酚醛树脂.
Rosin modified nonylphenolic resin was synthesized by one - step synthesis in laboratory.