常見(jiàn)例句雙語(yǔ)例句The methods for preparing structural material bonding agent by condensing the alkaline lignin in the wast liquor of soda pulping process with formaldehyde and phenol are described.本文敘述了利用堿法制漿廢液中的堿木素同苯酚、甲醛縮合制取結(jié)構(gòu)材料粘合劑的方法。 返回 soda pulping process