目的:评价异 丁基 壳聚糖作为生物材料的安全性.Objective To evaluate the bio compatibility of isobutyl - chitosan as a material.使用二异丁基-二甲氧基硅烷, DQ催化剂的氢调敏感性更好.With di - iso - butyl dimethoxy DIBS, DQ catalyst was more sensitive to hydrogen regul...
囚犯们在监狱墙下挖地道逃跑了.The convicts undermined the prison wall and escaped.救援人员挖地道通向那些探察洞穴的人.The rescuers tunnelled their way ( in ) to the pot - holers.他们在围墙下面挖地道通向远处的树林.They tunnelled along under the walls and up into the wood...