[化] 液化

Liquefy \Liq"ue*fy\ (l[i^]k"w[-e]*f[imac]), v. t. [imp. & p. p.
{Liquefied} (-f[imac]d); p. pr. & vb. n. {Liquefying}
(-f[imac]`[i^]ng).] [F. liqu['e]fier, L. liquere to be liquid
+ facere, -ficare (in comp.), to make. See {Liquid}, and
{-fy}.]
1. To convert from a solid form to that of a liquid; to melt;
to dissolve; and technically, to melt by the sole agency
of heat. [WordNet sense 1]

2. To convert from a gaseous form into a liquid; as, to
liquefy natural gas.
[PJC]