halogens什么意思

halogens的音标：halogens的英式发音音标为：['hælədʒənz]halogens的美式发音音标为：['hælədʒənz]...

Halogens also have the necessary absorption in the ultraviolet and rapid dissociation.卤素也具有吸收紫外线和分解快这两种特性.Gas - filled lamp containing a tungsten filament and a small proportion of halogens.含有钨灯丝和少量卤素的充气灯.No halogens, no...