cadmium ion镉离子cadmiumn.镉Cadmium Poisioning and Preventing镉中毒及防制Cadmium and its Compound Poisoning镉及其化合物中毒cadmium-doped germanium detector锗掺镉探测器cadmiumselenide photoconductive cell硒化镉光导元件cadmium fluoride photon spectrometer氟化镉光子谱仪cadmium slenide photoconductive cell硒化镉光敏电阻cadmium sulfide photoconductive cell硫化镉光导元件cadmium gadolinium tungstate crystal钨酸钆镉晶体cadmium sulphide photoconductive cell硫化镉光敏电阻cadmium selenide photoconductive cell硒化镉光敏电阻