基本解释聚氨酯橡膠同根派生 urethanes相关词英汉例句Silicones and urethanes are by far the leading sealant products followed by latex and butyl rubber.到目前爲止密封劑産品主要是矽樹脂和聚氨酯橡膠,其次是乳膠和丁基橡膠。urethanes更多例句