基本解釋聚氨酯橡膠同根派生 urethanes相關詞英漢例句Silicones and urethanes are by far the leading sealant products followed by latex and butyl rubber.到目前為止密封劑產品主要是硅樹脂和聚氨酯橡膠，其次是乳膠和丁基橡膠。urethanes更多例句