selenium.硒seleniumn.[化] 硒selenium diethyldithiocarbamate二乙基二硫代氨基甲酸硒selenium diethyl dithiocarbamate二乙基二硫代氨基甲酸硒Selenium-Chitooligosaccharides甲壳低聚糖硒selenium dibutyl dithiocarbamate二丁基二硫代氨基甲酸硒selenium-xerographic duplicator硒静电复印机Selenium-Elaeagnus bockii Diels富硒长叶胡颓子Selenium - enriched health food富硒保健品Selenium-enriched Lentinus edodes富硒香菇selenium-containing polysaccharide硒多糖selenium steel gas welding electrode硒钢气焊条