Polyurethane-urea
[化] 聚氨酯-脲
🧩 词语组成解析
n. 聚氨酯\\n[化] 聚氨基甲酸酯; 聚氨酯
urea
[['juəriə]]
n. 尿素\\n[化] 脲; 尿素
🗣️ 情景例句
Columbia? Why Columbia?
Columbia？为什么要去Columbia？
Have you offered him any candy?
你给他糖果吗？
It was the idea of supporting a craft on a 'pad',or cushion, of low-pressure air, ringed with a curtain of higher pressure air.
用一个气垫来支撑船体，低压空或软垫，软垫周围用高压空气环绕。