rosin activated
常見(jiàn)例句
- The important role of rosin, oil of turpentine, tannin, activated carbon of forest chemical industry in national economy are point out.
林化産業(yè)在我國(guó)民經(jīng)濟(jì)中居於重要地位，在國(guó)際市場(chǎng)上也佔(zhàn)有相儅份額。 返回 rosin activated