rosin activated
常見例句
- The important role of rosin, oil of turpentine, tannin, activated carbon of forest chemical industry in national economy are point out.
林化產(chǎn)業(yè)在我國(guó)民經(jīng)濟(jì)中居于重要地位，在國(guó)際市場(chǎng)上也占有相當(dāng)份額。 返回 rosin activated