top ▁con ve ction ▁o ven ▁designed ▁to ▁f ry ▁food s ▁by ▁using ▁hot ▁air ▁circul ating ▁around ▁the ▁food ▁with ▁a ▁con ve ction ▁fan . ▁▁ ▁A ▁comb i ▁ste amer ▁is ▁an ▁o ven ▁that ▁comb ines ▁con ve ction ▁functionality ▁with ▁super he ated ▁steam ▁to ▁cook ▁food s ▁even ▁faster ▁and ▁retain ▁more ▁nut ri ents ▁and ▁mo ist ure . ▁ ▁Indust rial ▁con ve ction ▁o vens ▁Indust rial ▁con ve ction ▁o vens ▁can ▁be ▁very ▁large - s ized , ▁and ▁are ▁typically ▁used ▁for ▁manufact uring ▁various ▁items . ▁ ▁References ▁▁ ▁Category : O vens ▁Category : Con ve ction ▁Category : 2 0 th - century ▁invent ions <0x0A> </s> ▁Jin ▁Pref ect ure , ▁also ▁known ▁by ▁its ▁Chinese ▁name ▁Jin z hou , ▁was ▁a ▁pre fect ure ▁of ▁imperial ▁China . ▁Its ▁seat — also ▁known ▁as ▁Jin z hou — was ▁at ▁Lu y ang ▁( near ▁modern ▁May ang , ▁Hun an ). ▁ ▁History ▁Jin ▁was ▁created ▁from ▁Chen ▁Pref ect ure ▁( , ▁Ch én zh ō u ) ▁in ▁  6 8 6 ▁under ▁the ▁Tang ▁D ynast y . ▁It ▁was ▁later ▁renamed ▁Lu y ang ▁Command ery ▁( , ▁L ú y á ng j ù n ). ▁ ▁See ▁also ▁ ▁Other ▁Jin ▁Pref ect ures / J in zh ous ▁ ▁References ▁ ▁Cit ations ▁ ▁Bibli ography ▁ ▁. ▁ ▁Category : P ref ect ures ▁of