关于blackening的百科

• blackening造句怎么写

• Inthespringfiresweptacrossthehills,blackeningthem.adiseaseblackeningtheleavesofpearandappletrees.Thesaidliquidconsistsofblackeningliquidandphosphatizationliquid.Theinfluenceofammoniummolybdate,cobaltsulphate,ammoniumbifluoride,acidityofblackeningbath...
• 2018-03-2011746