Polybutadienes
(polybutadiene 的复数) [机] 聚丁二烯
🗣️ 情景例句
What section is the car parked in? ?
车停在哪儿？
May I speak to Mr. Johnson, please?
我想请约翰先生听电话好吗？
I still have some questions concerning our contract.
就合同方面我还有些问题要问。