معنى كوبالت عنصر في القاموس

COBALT ORES AND CONCENTRATES

Containing by weight antimony as the principal other element

Goods, as follows (a) connection and contact elements for wires and cables; (b) wafer probers

COBALT OXIDES AND HYDROXIDES; COMMERCIAL COBALT OXIDES

Switch blades, crossing frogs, point rods and other crossing pieces