常見(jiàn)例句

• Silicones and urethanes are by far the leading sealant products followed by latex and butyl rubber.
  到目前爲(wèi)止密封劑産品主要是矽樹(shù)脂和聚氨酯橡膠，其次是乳膠和丁基橡膠。
返回 urethanes