natralboll是什么意思

用法例句

This paper studied the TCF bleaching of rice straw ammonium sulfite pulping, which contains of oxygen-alkali bleaching, acid treatment and hydrogen peroxide bleaching.

研究了稻草亚铵浆的氧碱漂白、酸预处理和过氧化氢补充漂的三段漂白。