Polyether ketone ketone (pekk)
[化] 聚醚酮酮
🧩 词语组成解析
n. [化]聚醚,多醚
ketone
['ki:toʊn]
n. 酮;
ketone
['ki:toʊn]
n. 酮;
🗣️ 情景例句
Is this five-two-one double eight six-four?
这里是521-8864吗？
Why didn't you say so?
为什么不早说？
A colony of bees had turned the engine into a hive and it was totally preserved in beeswax!
一群蜜蜂把发动机当作了蜂房，发动机在蜂蜡中被完整地保存了下来。