This is not like crystalline ice, where it's a very compact ordered structure.

这种水冰不像结晶冰——结晶冰的结构非常紧凑有序。

It melts the loose metal powder into a compact structure.

它将松散的金属粉末熔化成致密的结构。

They found that it binds to chromatin, the compact structure that allows long molecules of DNA to ball up and fit into a tiny cell.

研究人员认为，Dsup作为一种染色质绝缘体，可以保护DNA免受羟基自由基的攻击。