5月份工程师们在一条氢燃料管线上发现一条裂隙。In May engineers found a leak in a hydrogen fuel line.下面是个令人毛骨悚然的深不见底的裂隙。Below was a terrifyingly deep crevasse.断层破裂可能只包括单独一条狭窄的主裂隙.Fault ruptures may consist of a single narrow main break....
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...