Polyacrylamide
[化] 聚丙烯酰胺
🗣️ 情景例句
You're pretty close.
你的答案相当接近了。
He is unworthy to live who lives only for himself.
为己而生，生而可耻。
so every so often a sample is obtained with a coring bit.
因此时常要用取芯钻头取样。