凹印过版机：lay-on machine
凹印轮转机：rotogravure press
凹印着墨孔：intaglio recess
凹圆形顶棚：coved ceiling
凹圆形钢球：concave ball
凹圆形线脚：cove moulding,cove molding,sunk bead
凹猪屎豆碱：retusine
熬胶，制胶：size cooking
熬糖至结晶：boiling of sugar to grain
螯合测定法：chelatometry
螯合分离法：chelate separation process
螯合激光器：chelate laser
螯合配位体：chelating ligand
螯合溶剂化：chelate solvation
螯合物形成：chelata formation
螯合吸附剂：chelate sorbent
螯合絮凝剂：chelating flocculant
螯合指示剂：chelatometric indicator
螯形化合物：chelate compound
螯形聚合物：chelate polymer ,chelic polymer,chelating polymer
奥本海姆征：Oppenheim's sign
奥地利橡树：Austrian oak ,Quercus sessiliflora)
奥地利运动：Austrian movement
奥地灵芝素：oregonensin
奥顿测温锥：Orton,cone
奥尔类脐菇：jack-O'-Lantern mushroom
奥耳默尔病：exanthematous Mediterranean fever
奥佛尼红素：averufin
奥科提罗蜡：ocotilla wax,ocotillo wax
奥克托齿轮：Octoid gear
奥枯草菌素：obutin
奥里斯康阶：Oriskanian stage
奥林匹斯山：Olympus Mons
奥米伽船位：Omega fix
奥米伽网络：Omega network
奥桑那圆图：Ossanna's circle diagram
奥氏比色计：Ostwald's colorimeter,Ostwald's colourmeter
奥氏体时效：austenaging
奥氏体退火：austennealing
奥斯陆早餐：Oslo meal
奥斯猛炉铁：Osmund iron
奥斯汀式坝：Austin dam
奥斯脱拉特：astralite
奥陶纪石油：Ordovician crudes
奥托发动机：Otto engine
奥托芒丝绒：velours Ottoman
奥托式焦炉：Otto coke oven
奥耶斯基病：Aujeszky's disease,pseudorabies,maditch
奥运会会旗：Olympic Flag
奥运会火炬：Olympic Torch