Polyether ether ketone ketone (peekk)
[化] 聚醚醚酮酮
🧩 词语组成解析
n. [化]聚醚,多醚
ether
['i:θə]
n. <化>醚;the ether 苍穹;苍天;太空;
ketone
['ki:toʊn]
n. 酮;
ketone
['ki:toʊn]
n. 酮;
🗣️ 情景例句
How many people are there in your family?
您家有几口人？
Perseverance is failing nineteen times and succeeding the twentieth.
十九次失败，到第二十次获得成功，这就叫坚持。
but although our faith in many of the things in which our forefathers fervently believed has weakened,
可是虽然我们对我们祖先笃信的许多事物已不太相信，