adj.六價的
"lead, cadmium, sexivalent chromium" 鉛、鎘、六價鉻
Keywords active carbon;deep-colored leather;sexivalent chromium ion( Cr(VI));dyestuff;de-coloring; 活性炭;深色革;六價鉻離子;染料;吸附脫色;
sexivalent - chromium 六價鉻