The reactivity of wheat straw soda lignin ( WSSL ) can be improved by demethylation modification.麦草 碱木素在碱催化下经脱甲基改性可提高其反应活性.The wheat sprouts grew perceptibly after the rain.下了一场雨,麦苗立刻见长.Heat - denatured wheat endosperm p...
He pushed his bike up a steep hill.他推着自行车上斜坡。Such a steep descent in an airplane would have blacked out a fledging.飞机作这样的急速下降本来是会使缺乏飞行经验的人眼前发黑的.He climbed the steep cliff by getting footholds in cracks in the rock.他在岩石缝中...