例句與造句

1. It was found that the high , ystallinity of the soft segment regions and the formation of hard segment domains are the necessary conditions for polyurethane with good shape memory behavior . secondly , shape memory polyurethane ionomer was synthesized
   并從結(jié)構(gòu)與性能的關(guān)系入手，深入探討了形狀記憶聚氨酯的結(jié)構(gòu)對其形狀記憶性能的影響，發(fā)現(xiàn)軟段高度結(jié)晶和硬段聚集形成硬段微區(qū)是聚氨酯具有較好形狀記憶性能的必要條件。
2. It's difficult to find hard segment domains in a sentence. 用hard segment domains造句挺難的