n.聚醚型聚氨酯橡胶 polyether urethane: 聚醚聚氨酯urethane rubber: 聚氨酯橡胶polyether rubber impression material: 聚醚橡胶印模材料castable urethane rubber: 浇注型聚氨酯橡胶solid urethane rubber: 固体聚氨酯橡胶下载手机词典可随时随地查词查翻译