所有transition metal都有2个或2个以上化合价吗?

所有transition metal都有2个或2个以上化合价吗? transition metal transition transition transition transition transition transition transition Effect of pH and concentration of solution on transition metal ion adsorptionof PAAAM superabsorbent second period transition metal指的是元素周期表的哪一段,应该怎么翻译, 英语翻译Glass-Forming Ability in Laser Quenched Transition-Metal Alloys.这个是标题,求犀利翻译 metal有没有复数 metal metal 英语翻译Fracture mode is predominantly ductile in base metal.However,there exists intergranular fracture in theweld metal.The transition of fracture mode from basemetal to weld metal may lead to dramatic decrease infracture toughness.我要的是 ligand和transition metal 的联系 以及两者之间对不同co-ordinate number的影响A-level How about Zn? 求翻译Transition metal complexes that possess DNA photocleavageTransition metal complexes that possess DNA photocleavageactivities have drawnmuch attention by virtue of theirutilities as DNA structure probes and as anticancer agents.1Among them,Ru