苏珊娜是从1956年开始修建这个花园的。It was 1956 when Susanna started the work on the garden.花园的尽头有一条小河。There was a small stream at the end of the garden.花园的尽头留作了菜地。The bottom of the garden was given over to vegetable plots....
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...